27770070 has 16 divisors (see below), whose sum is σ = 66648240. Its totient is φ = 7405344.

The previous prime is 27770069. The next prime is 27770087. The reversal of 27770070 is 7007772.

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: 925669 = 27770070 / (2 + 7 + 7 + 7 + 0 + 0 + 7 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462805 + ... + 462864.

It is an arithmetic number, because the mean of its divisors is an integer number (4165515).

Almost surely, 2^27770070 is an apocalyptic number.

27770070 is an abundant number, since it is smaller than the sum of its proper divisors (38878170).

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

27770070 is a wasteful number, since it uses less digits than its factorization.

27770070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925679.

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

The square root of 27770070 is about 5269.7314922110. The cubic root of 27770070 is about 302.8254176239.

The spelling of 27770070 in words is "twenty-seven million, seven hundred seventy thousand, seventy".