72617074 has 4 divisors (see below), whose sum is σ = 108925614. Its totient is φ = 36308536.

The previous prime is 72617071. The next prime is 72617089. The reversal of 72617074 is 47071627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47071627 = 43 ⋅1094689.

It can be written as a sum of positive squares in only one way, i.e., 40411449 + 32205625 = 6357^2 + 5675^2 .

It is not an unprimeable number, because it can be changed into a prime (72617071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18154267 + ... + 18154270.

Almost surely, 2^72617074 is an apocalyptic number.

72617074 is a deficient number, since it is larger than the sum of its proper divisors (36308540).

72617074 is a wasteful number, since it uses less digits than its factorization.

72617074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36308539.

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 72617074 is about 8521.5652318104. The cubic root of 72617074 is about 417.2018720958.

The spelling of 72617074 in words is "seventy-two million, six hundred seventeen thousand, seventy-four".