72070999 has 16 divisors (see below), whose sum is σ = 96768000. Its totient is φ = 51838560.

The previous prime is 72070997. The next prime is 72071033. The reversal of 72070999 is 99907027.

It is a cyclic number.

It is not a de Polignac number, because 72070999 - 2¹ = 72070997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72070991) 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, 34999 + ... + 37000.

It is an arithmetic number, because the mean of its divisors is an integer number (6048000).

Almost surely, 2^72070999 is an apocalyptic number.

72070999 is a deficient number, since it is larger than the sum of its proper divisors (24697001).

72070999 is a wasteful number, since it uses less digits than its factorization.

72070999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72030.

The product of its (nonzero) digits is 71442, while the sum is 43.

The square root of 72070999 is about 8489.4639995703. The cubic root of 72070999 is about 416.1534640126.

The spelling of 72070999 in words is "seventy-two million, seventy thousand, nine hundred ninety-nine".