74887957 has 2 divisors, whose sum is σ = 74887958. Its totient is φ = 74887956.

The previous prime is 74887951. The next prime is 74887961. The reversal of 74887957 is 75978847.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73719396 + 1168561 = 8586^2 + 1081^2 .

It is a cyclic number.

It is not a de Polignac number, because 74887957 - 2¹⁵ = 74855189 is a prime.

It is a super-2 number, since 2×74887957² = 11216412207267698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74887898 and 74887907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74887951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37443978 + 37443979.

It is an arithmetic number, because the mean of its divisors is an integer number (37443979).

Almost surely, 2^74887957 is an apocalyptic number.

It is an amenable number.

74887957 is a deficient number, since it is larger than the sum of its proper divisors (1).

74887957 is an equidigital number, since it uses as much as digits as its factorization.

74887957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3951360, while the sum is 55.

The square root of 74887957 is about 8653.7828144691. The cubic root of 74887957 is about 421.5062263761.

The spelling of 74887957 in words is "seventy-four million, eight hundred eighty-seven thousand, nine hundred fifty-seven".