72047567 has 4 divisors (see below), whose sum is σ = 72261696. Its totient is φ = 71833440.

The previous prime is 72047551. The next prime is 72047587. The reversal of 72047567 is 76574027.

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

It is a cyclic number.

It is not a de Polignac number, because 72047567 - 2⁴ = 72047551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72047567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72047587) 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, 106559 + ... + 107232.

It is an arithmetic number, because the mean of its divisors is an integer number (18065424).

Almost surely, 2^72047567 is an apocalyptic number.

72047567 is a deficient number, since it is larger than the sum of its proper divisors (214129).

72047567 is a wasteful number, since it uses less digits than its factorization.

72047567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214128.

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 72047567 is about 8488.0838238085. The cubic root of 72047567 is about 416.1083586531.

The spelling of 72047567 in words is "seventy-two million, forty-seven thousand, five hundred sixty-seven".