40612657 has 2 divisors, whose sum is σ = 40612658. Its totient is φ = 40612656.

The previous prime is 40612651. The next prime is 40612669. The reversal of 40612657 is 75621604.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39891856 + 720801 = 6316^2 + 849^2 .

It is a cyclic number.

It is not a de Polignac number, because 40612657 - 2⁷ = 40612529 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40612651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20306328 + 20306329.

It is an arithmetic number, because the mean of its divisors is an integer number (20306329).

Almost surely, 2^40612657 is an apocalyptic number.

It is an amenable number.

40612657 is a deficient number, since it is larger than the sum of its proper divisors (1).

40612657 is an equidigital number, since it uses as much as digits as its factorization.

40612657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 40612657 is about 6372.8060538510. The cubic root of 40612657 is about 343.7323979086.

The spelling of 40612657 in words is "forty million, six hundred twelve thousand, six hundred fifty-seven".