72550635 has 16 divisors (see below), whose sum is σ = 116593440. Its totient is φ = 38522880.

The previous prime is 72550631. The next prime is 72550637. The reversal of 72550635 is 53605527.

It is not a de Polignac number, because 72550635 - 2² = 72550631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72550596 and 72550605.

It is not an unprimeable number, because it can be changed into a prime (72550631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7126 + ... + 13995.

It is an arithmetic number, because the mean of its divisors is an integer number (7287090).

Almost surely, 2^72550635 is an apocalyptic number.

72550635 is a deficient number, since it is larger than the sum of its proper divisors (44042805).

72550635 is a wasteful number, since it uses less digits than its factorization.

72550635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21358.

The product of its (nonzero) digits is 31500, while the sum is 33.

The square root of 72550635 is about 8517.6660535619. Note that the first 3 decimals coincide. The cubic root of 72550635 is about 417.0745974693.

It can be divided in two parts, 725 and 50635, that added together give a triangular number (51360 = T₃₂₀).

The spelling of 72550635 in words is "seventy-two million, five hundred fifty thousand, six hundred thirty-five".