57839661 has 24 divisors (see below), whose sum is σ = 96505344. Its totient is φ = 32991360.

The previous prime is 57839633. The next prime is 57839669. The reversal of 57839661 is 16693875.

It is a happy number.

It is not a de Polignac number, because 57839661 - 2⁷ = 57839533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57839669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15501 + ... + 18866.

It is an arithmetic number, because the mean of its divisors is an integer number (4021056).

Almost surely, 2^57839661 is an apocalyptic number.

57839661 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

57839661 is a deficient number, since it is larger than the sum of its proper divisors (38665683).

57839661 is a wasteful number, since it uses less digits than its factorization.

57839661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34401 (or 34398 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 57839661 is about 7605.2390494974. The cubic root of 57839661 is about 386.7306380319.

The spelling of 57839661 in words is "fifty-seven million, eight hundred thirty-nine thousand, six hundred sixty-one".