72146631 has 8 divisors (see below), whose sum is σ = 96236784. Its totient is φ = 48077120.

The previous prime is 72146611. The next prime is 72146639. The reversal of 72146631 is 13664127.

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 72146631 - 2⁶ = 72146567 is a prime.

It is a super-2 number, since 2×72146631² = 10410272729300322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72146639) 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, 7291 + ... + 14051.

It is an arithmetic number, because the mean of its divisors is an integer number (12029598).

Almost surely, 2^72146631 is an apocalyptic number.

72146631 is a deficient number, since it is larger than the sum of its proper divisors (24090153).

72146631 is a wasteful number, since it uses less digits than its factorization.

72146631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10321.

The product of its digits is 6048, while the sum is 30.

The square root of 72146631 is about 8493.9172941582. The cubic root of 72146631 is about 416.2989849376.

The spelling of 72146631 in words is "seventy-two million, one hundred forty-six thousand, six hundred thirty-one".