70732690 has 16 divisors (see below), whose sum is σ = 145507392. Its totient is φ = 24251184.

The previous prime is 70732643. The next prime is 70732723. The reversal of 70732690 is 9623707.

It is a super-2 number, since 2×70732690² = 10006226869272200, which contains 22 as substring.

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, 505164 + ... + 505303.

It is an arithmetic number, because the mean of its divisors is an integer number (9094212).

Almost surely, 2^70732690 is an apocalyptic number.

70732690 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

70732690 is an abundant number, since it is smaller than the sum of its proper divisors (74774702).

70732690 is a wasteful number, since it uses less digits than its factorization.

70732690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010481.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 70732690 is about 8410.2728849901. The cubic root of 70732690 is about 413.5614585027.

The spelling of 70732690 in words is "seventy million, seven hundred thirty-two thousand, six hundred ninety".