72775147 has 8 divisors (see below), whose sum is σ = 77985936. Its totient is φ = 67667712.

The previous prime is 72775141. The next prime is 72775159. The reversal of 72775147 is 74157727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72775147 - 2³ = 72775139 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 24378 + ... + 27199.

It is an arithmetic number, because the mean of its divisors is an integer number (9748242).

Almost surely, 2^72775147 is an apocalyptic number.

72775147 is a deficient number, since it is larger than the sum of its proper divisors (5210789).

72775147 is a wasteful number, since it uses less digits than its factorization.

72775147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51677.

The product of its digits is 96040, while the sum is 40.

The square root of 72775147 is about 8530.8350704957. The cubic root of 72775147 is about 417.5043746778.

The spelling of 72775147 in words is "seventy-two million, seven hundred seventy-five thousand, one hundred forty-seven".