34387657 has 2 divisors, whose sum is σ = 34387658. Its totient is φ = 34387656.

The previous prime is 34387637. The next prime is 34387667. The reversal of 34387657 is 75678343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32901696 + 1485961 = 5736^2 + 1219^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34387657 is a prime.

It is not a weakly prime, because it can be changed into another prime (34387637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17193828 + 17193829.

It is an arithmetic number, because the mean of its divisors is an integer number (17193829).

Almost surely, 2^34387657 is an apocalyptic number.

It is an amenable number.

34387657 is a deficient number, since it is larger than the sum of its proper divisors (1).

34387657 is an equidigital number, since it uses as much as digits as its factorization.

34387657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 43.

The square root of 34387657 is about 5864.0989930253. The cubic root of 34387657 is about 325.1877636909.

The spelling of 34387657 in words is "thirty-four million, three hundred eighty-seven thousand, six hundred fifty-seven".