74904643 has 8 divisors (see below), whose sum is σ = 82834416. Its totient is φ = 67161600.

The previous prime is 74904637. The next prime is 74904659. The reversal of 74904643 is 34640947.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74904643 - 2⁵ = 74904611 is a prime.

It is a super-2 number, since 2×74904643² = 11221411085914898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74904043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45838 + ... + 47443.

It is an arithmetic number, because the mean of its divisors is an integer number (10354302).

Almost surely, 2^74904643 is an apocalyptic number.

74904643 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

74904643 is a deficient number, since it is larger than the sum of its proper divisors (7929773).

74904643 is a wasteful number, since it uses less digits than its factorization.

74904643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93365.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 74904643 is about 8654.7468478287. The cubic root of 74904643 is about 421.5375297208.

The spelling of 74904643 in words is "seventy-four million, nine hundred four thousand, six hundred forty-three".