83477285 has 4 divisors (see below), whose sum is σ = 100172748. Its totient is φ = 66781824.

The previous prime is 83477267. The next prime is 83477287. The reversal of 83477285 is 58277438.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50495236 + 32982049 = 7106^2 + 5743^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83477285 is a prime.

It is a super-2 number, since 2×83477285² = 13936914221942450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83477287) 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, 8347724 + ... + 8347733.

It is an arithmetic number, because the mean of its divisors is an integer number (25043187).

Almost surely, 2^83477285 is an apocalyptic number.

It is an amenable number.

83477285 is a deficient number, since it is larger than the sum of its proper divisors (16695463).

83477285 is a wasteful number, since it uses less digits than its factorization.

83477285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16695462.

The product of its digits is 376320, while the sum is 44.

The square root of 83477285 is about 9136.5904472073. The cubic root of 83477285 is about 437.0415944155.

The spelling of 83477285 in words is "eighty-three million, four hundred seventy-seven thousand, two hundred eighty-five".