57640743 has 6 divisors (see below), whose sum is σ = 83258864. Its totient is φ = 38427156.

The previous prime is 57640741. The next prime is 57640763. The reversal of 57640743 is 34704675.

57640743 is a `hidden beast` number, since 5 + 7 + 640 + 7 + 4 + 3 = 666.

It is not a de Polignac number, because 57640743 - 2¹ = 57640741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57640698 and 57640707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57640741) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3202255 + ... + 3202272.

Almost surely, 2^57640743 is an apocalyptic number.

57640743 is a deficient number, since it is larger than the sum of its proper divisors (25618121).

57640743 is a wasteful number, since it uses less digits than its factorization.

57640743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6404533 (or 6404530 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 57640743 is about 7592.1500907187. The cubic root of 57640743 is about 386.2867900986.

The spelling of 57640743 in words is "fifty-seven million, six hundred forty thousand, seven hundred forty-three".