74680809 has 32 divisors (see below), whose sum is σ = 117325824. Its totient is φ = 41368320.

The previous prime is 74680807. The next prime is 74680817. The reversal of 74680809 is 90808647.

It is a happy number.

It is not a de Polignac number, because 74680809 - 2¹ = 74680807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74680807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172257 + ... + 172689.

It is an arithmetic number, because the mean of its divisors is an integer number (3666432).

Almost surely, 2^74680809 is an apocalyptic number.

It is an amenable number.

74680809 is a deficient number, since it is larger than the sum of its proper divisors (42645015).

74680809 is a wasteful number, since it uses less digits than its factorization.

74680809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 74680809 is about 8641.8058876603. The cubic root of 74680809 is about 421.1172238984.

The spelling of 74680809 in words is "seventy-four million, six hundred eighty thousand, eight hundred nine".