74805945 has 32 divisors (see below), whose sum is σ = 130068480. Its totient is φ = 36573120.

The previous prime is 74805943. The next prime is 74805979. The reversal of 74805945 is 54950847.

It is not a de Polignac number, because 74805945 - 2¹ = 74805943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74805897 and 74805906.

It is not an unprimeable number, because it can be changed into a prime (74805943) 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, 4602 + ... + 13068.

It is an arithmetic number, because the mean of its divisors is an integer number (4064640).

Almost surely, 2^74805945 is an apocalyptic number.

It is an amenable number.

74805945 is a deficient number, since it is larger than the sum of its proper divisors (55262535).

74805945 is a wasteful number, since it uses less digits than its factorization.

74805945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8525.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 74805945 is about 8649.0430106457. The cubic root of 74805945 is about 421.3523022263.

The spelling of 74805945 in words is "seventy-four million, eight hundred five thousand, nine hundred forty-five".