74631977 has 4 divisors (see below), whose sum is σ = 85293696. Its totient is φ = 63970260.

The previous prime is 74631971. The next prime is 74631979. The reversal of 74631977 is 77913647.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77913647 = 7 ⋅11130521.

It is a cyclic number.

It is not a de Polignac number, because 74631977 - 2¹⁰ = 74630953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74631971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5330849 + ... + 5330862.

It is an arithmetic number, because the mean of its divisors is an integer number (21323424).

Almost surely, 2^74631977 is an apocalyptic number.

It is an amenable number.

74631977 is a deficient number, since it is larger than the sum of its proper divisors (10661719).

74631977 is a wasteful number, since it uses less digits than its factorization.

74631977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10661718.

The product of its digits is 222264, while the sum is 44.

The square root of 74631977 is about 8638.9800902653. The cubic root of 74631977 is about 421.0254177156.

It can be divided in two parts, 746 and 31977, that added together give a palindrome (32723).

The spelling of 74631977 in words is "seventy-four million, six hundred thirty-one thousand, nine hundred seventy-seven".