72147607 has 4 divisors (see below), whose sum is σ = 82454416. Its totient is φ = 61840800.

The previous prime is 72147599. The next prime is 72147611. The reversal of 72147607 is 70674127.

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

It is not a de Polignac number, because 72147607 - 2³ = 72147599 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 (72147107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5153394 + ... + 5153407.

It is an arithmetic number, because the mean of its divisors is an integer number (20613604).

Almost surely, 2^72147607 is an apocalyptic number.

72147607 is a deficient number, since it is larger than the sum of its proper divisors (10306809).

72147607 is a wasteful number, since it uses less digits than its factorization.

72147607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10306808.

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 72147607 is about 8493.9747468426. The cubic root of 72147607 is about 416.3008621607.

The spelling of 72147607 in words is "seventy-two million, one hundred forty-seven thousand, six hundred seven".