74597945 has 4 divisors (see below), whose sum is σ = 89517540. Its totient is φ = 59678352.

The previous prime is 74597927. The next prime is 74597969. The reversal of 74597945 is 54979547.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55771024 + 18826921 = 7468^2 + 4339^2 .

It is a cyclic number.

It is not a de Polignac number, because 74597945 - 2⁸ = 74597689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74597893 and 74597902.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7459790 + ... + 7459799.

It is an arithmetic number, because the mean of its divisors is an integer number (22379385).

Almost surely, 2^74597945 is an apocalyptic number.

It is an amenable number.

74597945 is a deficient number, since it is larger than the sum of its proper divisors (14919595).

74597945 is a wasteful number, since it uses less digits than its factorization.

74597945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14919594.

The product of its digits is 1587600, while the sum is 50.

The square root of 74597945 is about 8637.0101887169. The cubic root of 74597945 is about 420.9614124637.

The spelling of 74597945 in words is "seventy-four million, five hundred ninety-seven thousand, nine hundred forty-five".