74704745 has 8 divisors (see below), whose sum is σ = 89953416. Its totient is φ = 59558656.

The previous prime is 74704741. The next prime is 74704757. The reversal of 74704745 is 54740747.

It can be written as a sum of positive squares in 4 ways, for example, as 4631104 + 70073641 = 2152^2 + 8371^2 .

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 74704745 - 2² = 74704741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74704699 and 74704708.

It is not an unprimeable number, because it can be changed into a prime (74704741) 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, 24032 + ... + 26961.

It is an arithmetic number, because the mean of its divisors is an integer number (11244177).

Almost surely, 2^74704745 is an apocalyptic number.

It is an amenable number.

74704745 is a deficient number, since it is larger than the sum of its proper divisors (15248671).

74704745 is a wasteful number, since it uses less digits than its factorization.

74704745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51291.

The product of its (nonzero) digits is 109760, while the sum is 38.

The square root of 74704745 is about 8643.1906724311. The cubic root of 74704745 is about 421.1622099544.

The spelling of 74704745 in words is "seventy-four million, seven hundred four thousand, seven hundred forty-five".