72063173 has 48 divisors (see below), whose sum is σ = 96526080. Its totient is φ = 53230464.

The previous prime is 72063169. The next prime is 72063179. The reversal of 72063173 is 37136027.

It is not a de Polignac number, because 72063173 - 2² = 72063169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72063179) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 868190 + ... + 868272.

It is an arithmetic number, because the mean of its divisors is an integer number (2010960).

Almost surely, 2^72063173 is an apocalyptic number.

It is an amenable number.

72063173 is a deficient number, since it is larger than the sum of its proper divisors (24462907).

72063173 is a wasteful number, since it uses less digits than its factorization.

72063173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 72063173 is about 8489.0030627866. The cubic root of 72063173 is about 416.1384004644.

The spelling of 72063173 in words is "seventy-two million, sixty-three thousand, one hundred seventy-three".