40607657 has 2 divisors, whose sum is σ = 40607658. Its totient is φ = 40607656.

The previous prime is 40607641. The next prime is 40607683. The reversal of 40607657 is 75670604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29986576 + 10621081 = 5476^2 + 3259^2 .

It is a cyclic number.

It is not a de Polignac number, because 40607657 - 2⁴ = 40607641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40607687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20303828 + 20303829.

It is an arithmetic number, because the mean of its divisors is an integer number (20303829).

Almost surely, 2^40607657 is an apocalyptic number.

It is an amenable number.

40607657 is a deficient number, since it is larger than the sum of its proper divisors (1).

40607657 is an equidigital number, since it uses as much as digits as its factorization.

40607657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 40607657 is about 6372.4137499067. The cubic root of 40607657 is about 343.7182912019.

The spelling of 40607657 in words is "forty million, six hundred seven thousand, six hundred fifty-seven".