70786490 has 16 divisors (see below), whose sum is σ = 127620360. Its totient is φ = 28269120.

The previous prime is 70786483. The next prime is 70786511. The reversal of 70786490 is 9468707.

It can be written as a sum of positive squares in 4 ways, for example, as 70778569 + 7921 = 8413^2 + 89^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1256 + ... + 11964.

Almost surely, 2^70786490 is an apocalyptic number.

70786490 is a deficient number, since it is larger than the sum of its proper divisors (56833870).

70786490 is a wasteful number, since it uses less digits than its factorization.

70786490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11377.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 70786490 is about 8413.4707463686. The cubic root of 70786490 is about 413.6662849404. Note that the first 3 decimals are identical.

The spelling of 70786490 in words is "seventy million, seven hundred eighty-six thousand, four hundred ninety".