70618730 has 64 divisors (see below), whose sum is σ = 158796288. Its totient is φ = 22014720.

The previous prime is 70618729. The next prime is 70618759. The reversal of 70618730 is 3781607.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 64064 + ... + 65156.

It is an arithmetic number, because the mean of its divisors is an integer number (2481192).

Almost surely, 2^70618730 is an apocalyptic number.

70618730 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

70618730 is an abundant number, since it is smaller than the sum of its proper divisors (88177558).

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

70618730 is a wasteful number, since it uses less digits than its factorization.

70618730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 70618730 is about 8403.4951062043. The cubic root of 70618730 is about 413.3392378333.

The spelling of 70618730 in words is "seventy million, six hundred eighteen thousand, seven hundred thirty".