72775149 has 16 divisors (see below), whose sum is σ = 102674880. Its totient is φ = 45722880.

The previous prime is 72775141. The next prime is 72775159. The reversal of 72775149 is 94157727.

It is not a de Polignac number, because 72775149 - 2³ = 72775141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72775149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72775141) 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, 7989 + ... + 14469.

It is an arithmetic number, because the mean of its divisors is an integer number (6417180).

Almost surely, 2^72775149 is an apocalyptic number.

It is an amenable number.

72775149 is a deficient number, since it is larger than the sum of its proper divisors (29899731).

72775149 is a wasteful number, since it uses less digits than its factorization.

72775149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6700.

The product of its digits is 123480, while the sum is 42.

The square root of 72775149 is about 8530.8351877176. The cubic root of 72775149 is about 417.5043785024.

The spelling of 72775149 in words is "seventy-two million, seven hundred seventy-five thousand, one hundred forty-nine".