72678373 has 4 divisors (see below), whose sum is σ = 72747808. Its totient is φ = 72608940.

The previous prime is 72678337. The next prime is 72678391. The reversal of 72678373 is 37387627.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72678373 - 2¹³ = 72670181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72678313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33123 + ... + 35248.

It is an arithmetic number, because the mean of its divisors is an integer number (18186952).

Almost surely, 2^72678373 is an apocalyptic number.

It is an amenable number.

72678373 is a deficient number, since it is larger than the sum of its proper divisors (69435).

72678373 is a wasteful number, since it uses less digits than its factorization.

72678373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69434.

The product of its digits is 296352, while the sum is 43.

The square root of 72678373 is about 8525.1611714970. The cubic root of 72678373 is about 417.3192313865.

The spelling of 72678373 in words is "seventy-two million, six hundred seventy-eight thousand, three hundred seventy-three".