66486737 has 4 divisors (see below), whose sum is σ = 66531696. Its totient is φ = 66441780.

The previous prime is 66486731. The next prime is 66486773. The reversal of 66486737 is 73768466.

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.

It is a cyclic number.

It is not a de Polignac number, because 66486737 - 2⁸ = 66486481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66486691 and 66486700.

It is not an unprimeable number, because it can be changed into a prime (66486731) 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, 20183 + ... + 23244.

It is an arithmetic number, because the mean of its divisors is an integer number (16632924).

Almost surely, 2^66486737 is an apocalyptic number.

It is an amenable number.

66486737 is a deficient number, since it is larger than the sum of its proper divisors (44959).

66486737 is a wasteful number, since it uses less digits than its factorization.

66486737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44958.

The product of its digits is 1016064, while the sum is 47.

The square root of 66486737 is about 8153.9399678928. The cubic root of 66486737 is about 405.1150148371.

The spelling of 66486737 in words is "sixty-six million, four hundred eighty-six thousand, seven hundred thirty-seven".