83766737 has 4 divisors (see below), whose sum is σ = 85549056. Its totient is φ = 81984420.

The previous prime is 83766733. The next prime is 83766751. The reversal of 83766737 is 73766738.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73766738 = 2 ⋅36883369.

It is a cyclic number.

It is not a de Polignac number, because 83766737 - 2² = 83766733 is a prime.

It is a super-3 number, since 3×83766737³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 1782271 = 83766737 / (8 + 3 + 7 + 6 + 6 + 7 + 3 + 7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83766691 and 83766700.

It is not an unprimeable number, because it can be changed into a prime (83766733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891089 + ... + 891182.

It is an arithmetic number, because the mean of its divisors is an integer number (21387264).

Almost surely, 2^83766737 is an apocalyptic number.

It is an amenable number.

83766737 is a deficient number, since it is larger than the sum of its proper divisors (1782319).

83766737 is a wasteful number, since it uses less digits than its factorization.

83766737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782318.

The product of its digits is 889056, while the sum is 47.

The square root of 83766737 is about 9152.4170031746. The cubic root of 83766737 is about 437.5461493631.

Subtracting from 83766737 its reverse (73766738), we obtain a palindrome (9999999).

The spelling of 83766737 in words is "eighty-three million, seven hundred sixty-six thousand, seven hundred thirty-seven".