74340657 has 6 divisors (see below), whose sum is σ = 107380962. Its totient is φ = 49560432.

The previous prime is 74340641. The next prime is 74340661. The reversal of 74340657 is 75604347.

It can be written as a sum of positive squares in only one way, i.e., 60233121 + 14107536 = 7761^2 + 3756^2 .

It is not a de Polignac number, because 74340657 - 2⁴ = 74340641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74340157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4130028 + ... + 4130045.

It is an arithmetic number, because the mean of its divisors is an integer number (17896827).

Almost surely, 2^74340657 is an apocalyptic number.

It is an amenable number.

74340657 is a deficient number, since it is larger than the sum of its proper divisors (33040305).

74340657 is a wasteful number, since it uses less digits than its factorization.

74340657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8260079 (or 8260076 counting only the distinct ones).

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

The square root of 74340657 is about 8622.1028177586. The cubic root of 74340657 is about 420.4768902813.

The spelling of 74340657 in words is "seventy-four million, three hundred forty thousand, six hundred fifty-seven".