40870657 has 8 divisors (see below), whose sum is σ = 42998400. Its totient is φ = 38790864.

The previous prime is 40870651. The next prime is 40870667. The reversal of 40870657 is 75607804.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40870657 - 2³ = 40870649 is a prime.

It is a super-2 number, since 2×40870657² = 3340821207223298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40870651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10233 + ... + 13654.

It is an arithmetic number, because the mean of its divisors is an integer number (5374800).

Almost surely, 2^40870657 is an apocalyptic number.

It is an amenable number.

40870657 is a deficient number, since it is larger than the sum of its proper divisors (2127743).

40870657 is a wasteful number, since it uses less digits than its factorization.

40870657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23975.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 40870657 is about 6393.0162677722. The cubic root of 40870657 is about 344.4587381936.

The spelling of 40870657 in words is "forty million, eight hundred seventy thousand, six hundred fifty-seven".