74696521 has 8 divisors (see below), whose sum is σ = 79535520. Its totient is φ = 69907008.

The previous prime is 74696509. The next prime is 74696539. The reversal of 74696521 is 12569647.

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

It is a cyclic number.

It is not a de Polignac number, because 74696521 - 2²¹ = 72599369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74696561) 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, 9231 + ... + 15316.

It is an arithmetic number, because the mean of its divisors is an integer number (9941940).

Almost surely, 2^74696521 is an apocalyptic number.

It is an amenable number.

74696521 is a deficient number, since it is larger than the sum of its proper divisors (4838999).

74696521 is a wasteful number, since it uses less digits than its factorization.

74696521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24743.

The product of its digits is 90720, while the sum is 40.

The square root of 74696521 is about 8642.7149091012. The cubic root of 74696521 is about 421.1467545991.

The spelling of 74696521 in words is "seventy-four million, six hundred ninety-six thousand, five hundred twenty-one".