74578223 has 2 divisors, whose sum is σ = 74578224. Its totient is φ = 74578222.

The previous prime is 74578181. The next prime is 74578241. The reversal of 74578223 is 32287547.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74578223 - 2⁸ = 74577967 is a prime.

It is a super-2 number, since 2×74578223² = 11123822691675458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74578253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37289111 + 37289112.

It is an arithmetic number, because the mean of its divisors is an integer number (37289112).

Almost surely, 2^74578223 is an apocalyptic number.

74578223 is a deficient number, since it is larger than the sum of its proper divisors (1).

74578223 is an equidigital number, since it uses as much as digits as its factorization.

74578223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 38.

The square root of 74578223 is about 8635.8683987194. The cubic root of 74578223 is about 420.9243116530.

The spelling of 74578223 in words is "seventy-four million, five hundred seventy-eight thousand, two hundred twenty-three".