74457691 has 16 divisors (see below), whose sum is σ = 95827968. Its totient is φ = 56145600.

The previous prime is 74457689. The next prime is 74457701. The reversal of 74457691 is 19675447.

It is not a de Polignac number, because 74457691 - 2¹ = 74457689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74457611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13210 + ... + 17983.

It is an arithmetic number, because the mean of its divisors is an integer number (5989248).

Almost surely, 2^74457691 is an apocalyptic number.

74457691 is a deficient number, since it is larger than the sum of its proper divisors (21370277).

74457691 is a wasteful number, since it uses less digits than its factorization.

74457691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31242.

The product of its digits is 211680, while the sum is 43.

The square root of 74457691 is about 8628.8870081836. The cubic root of 74457691 is about 420.6974259129.

The spelling of 74457691 in words is "seventy-four million, four hundred fifty-seven thousand, six hundred ninety-one".