72770070 has 16 divisors (see below), whose sum is σ = 174648240. Its totient is φ = 19405344.

The previous prime is 72770063. The next prime is 72770099. The reversal of 72770070 is 7007727.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2425669 = 72770070 / (7 + 2 + 7 + 7 + 0 + 0 + 7 + 0).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1212805 + ... + 1212864.

It is an arithmetic number, because the mean of its divisors is an integer number (10915515).

Almost surely, 2^72770070 is an apocalyptic number.

72770070 is an abundant number, since it is smaller than the sum of its proper divisors (101878170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72770070 is a wasteful number, since it uses less digits than its factorization.

72770070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2425679.

The product of its (nonzero) digits is 4802, while the sum is 30.

The square root of 72770070 is about 8530.5374977196. The cubic root of 72770070 is about 417.4946656901.

Adding to 72770070 its reverse (7007727), we get a palindrome (79777797).

The spelling of 72770070 in words is "seventy-two million, seven hundred seventy thousand, seventy".