74205945 has 24 divisors (see below), whose sum is σ = 140317632. Its totient is φ = 35978400.

The previous prime is 74205919. The next prime is 74205953. The reversal of 74205945 is 54950247.

It is not a de Polignac number, because 74205945 - 2¹¹ = 74203897 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74461 + ... + 75450.

It is an arithmetic number, because the mean of its divisors is an integer number (5846568).

Almost surely, 2^74205945 is an apocalyptic number.

It is an amenable number.

74205945 is a deficient number, since it is larger than the sum of its proper divisors (66111687).

74205945 is a wasteful number, since it uses less digits than its factorization.

74205945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149933 (or 149930 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 74205945 is about 8614.2872601278. The cubic root of 74205945 is about 420.2227559854. Note that the first 3 decimals are identical.

The spelling of 74205945 in words is "seventy-four million, two hundred five thousand, nine hundred forty-five".