72358645 has 12 divisors (see below), whose sum is σ = 89010180. Its totient is φ = 56468480.

The previous prime is 72358609. The next prime is 72358679. The reversal of 72358645 is 54685327.

It can be written as a sum of positive squares in 6 ways, for example, as 35319249 + 37039396 = 5943^2 + 6086^2 .

It is not a de Polignac number, because 72358645 - 2⁹ = 72358133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72358598 and 72358607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4101 + ... + 12709.

It is an arithmetic number, because the mean of its divisors is an integer number (7417515).

Almost surely, 2^72358645 is an apocalyptic number.

It is an amenable number.

72358645 is a deficient number, since it is larger than the sum of its proper divisors (16651535).

72358645 is an equidigital number, since it uses as much as digits as its factorization.

72358645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8696 (or 8655 counting only the distinct ones).

The product of its digits is 201600, while the sum is 40.

The square root of 72358645 is about 8506.3884816060. The cubic root of 72358645 is about 416.7063723940.

The spelling of 72358645 in words is "seventy-two million, three hundred fifty-eight thousand, six hundred forty-five".