72086697 has 12 divisors (see below), whose sum is σ = 105552564. Its totient is φ = 47399040.

The previous prime is 72086683. The next prime is 72086699. The reversal of 72086697 is 79668027.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 52186176 + 19900521 = 7224^2 + 4461^2 .

It is not a de Polignac number, because 72086697 - 2⁶ = 72086633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72086699) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54204 + ... + 55517.

It is an arithmetic number, because the mean of its divisors is an integer number (8796047).

Almost surely, 2^72086697 is an apocalyptic number.

It is an amenable number.

72086697 is a deficient number, since it is larger than the sum of its proper divisors (33465867).

72086697 is a wasteful number, since it uses less digits than its factorization.

72086697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109800 (or 109797 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 72086697 is about 8490.3885070119. The cubic root of 72086697 is about 416.1836763630.

The spelling of 72086697 in words is "seventy-two million, eighty-six thousand, six hundred ninety-seven".