72678622 has 4 divisors (see below), whose sum is σ = 109017936. Its totient is φ = 36339310.

The previous prime is 72678607. The next prime is 72678623. The reversal of 72678622 is 22687627.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72678623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18169654 + ... + 18169657.

It is an arithmetic number, because the mean of its divisors is an integer number (27254484).

Almost surely, 2^72678622 is an apocalyptic number.

72678622 is a deficient number, since it is larger than the sum of its proper divisors (36339314).

72678622 is a wasteful number, since it uses less digits than its factorization.

72678622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36339313.

The product of its digits is 112896, while the sum is 40.

The square root of 72678622 is about 8525.1757753140. The cubic root of 72678622 is about 417.3197079720.

The spelling of 72678622 in words is "seventy-two million, six hundred seventy-eight thousand, six hundred twenty-two".