74872957 has 2 divisors, whose sum is σ = 74872958. Its totient is φ = 74872956.

The previous prime is 74872951. The next prime is 74872991. The reversal of 74872957 is 75927847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64336441 + 10536516 = 8021^2 + 3246^2 .

It is an emirp because it is prime and its reverse (75927847) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74872957 - 2³ = 74872949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74872957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74872951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37436478 + 37436479.

It is an arithmetic number, because the mean of its divisors is an integer number (37436479).

Almost surely, 2^74872957 is an apocalyptic number.

It is an amenable number.

74872957 is a deficient number, since it is larger than the sum of its proper divisors (1).

74872957 is an equidigital number, since it uses as much as digits as its factorization.

74872957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 987840, while the sum is 49.

The square root of 74872957 is about 8652.9160980562. The cubic root of 74872957 is about 421.4780820397.

The spelling of 74872957 in words is "seventy-four million, eight hundred seventy-two thousand, nine hundred fifty-seven".