72612693 has 10 divisors (see below), whose sum is σ = 108470934. Its totient is φ = 48408408.

The previous prime is 72612691. The next prime is 72612719. The reversal of 72612693 is 39621627.

It can be written as a sum of positive squares in only one way, i.e., 57426084 + 15186609 = 7578^2 + 3897^2 .

It is not a de Polignac number, because 72612693 - 2¹ = 72612691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72612691) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 448146 + ... + 448307.

Almost surely, 2^72612693 is an apocalyptic number.

It is an amenable number.

72612693 is a deficient number, since it is larger than the sum of its proper divisors (35858241).

72612693 is an equidigital number, since it uses as much as digits as its factorization.

72612693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896465 (or 896456 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 72612693 is about 8521.3081742183. The cubic root of 72612693 is about 417.1934819746.

The spelling of 72612693 in words is "seventy-two million, six hundred twelve thousand, six hundred ninety-three".