74260657 has 4 divisors (see below), whose sum is σ = 74278260. Its totient is φ = 74243056.

The previous prime is 74260649. The next prime is 74260661. The reversal of 74260657 is 75606247.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35808256 + 38452401 = 5984^2 + 6201^2 .

It is a cyclic number.

It is not a de Polignac number, because 74260657 - 2³ = 74260649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74260157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1719 + ... + 12307.

It is an arithmetic number, because the mean of its divisors is an integer number (18569565).

Almost surely, 2^74260657 is an apocalyptic number.

It is an amenable number.

74260657 is a deficient number, since it is larger than the sum of its proper divisors (17603).

74260657 is a wasteful number, since it uses less digits than its factorization.

74260657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17602.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 74260657 is about 8617.4623294796. The cubic root of 74260657 is about 420.3260072782.

The spelling of 74260657 in words is "seventy-four million, two hundred sixty thousand, six hundred fifty-seven".