74321091 has 16 divisors (see below), whose sum is σ = 118575520. Its totient is φ = 45735840.

The previous prime is 74321089. The next prime is 74321101. The reversal of 74321091 is 19012347.

It is not a de Polignac number, because 74321091 - 2¹ = 74321089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74321021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105520 + ... + 106221.

It is an arithmetic number, because the mean of its divisors is an integer number (7410970).

Almost surely, 2^74321091 is an apocalyptic number.

74321091 is a deficient number, since it is larger than the sum of its proper divisors (44254429).

74321091 is a wasteful number, since it uses less digits than its factorization.

74321091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211763 (or 211757 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 74321091 is about 8620.9681010893. The cubic root of 74321091 is about 420.4399980744.

The spelling of 74321091 in words is "seventy-four million, three hundred twenty-one thousand, ninety-one".