70648739 has 16 divisors (see below), whose sum is σ = 82795200. Its totient is φ = 60258240.

The previous prime is 70648733. The next prime is 70648741. The reversal of 70648739 is 93784607.

It is not a de Polignac number, because 70648739 - 2⁸ = 70648483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70648739.

It is not an unprimeable number, because it can be changed into a prime (70648733) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 96017 + ... + 96749.

It is an arithmetic number, because the mean of its divisors is an integer number (5174700).

Almost surely, 2^70648739 is an apocalyptic number.

70648739 is a deficient number, since it is larger than the sum of its proper divisors (12146461).

70648739 is an equidigital number, since it uses as much as digits as its factorization.

70648739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035 (or 1021 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 70648739 is about 8405.2804236385. The cubic root of 70648739 is about 413.3977782074.

The spelling of 70648739 in words is "seventy million, six hundred forty-eight thousand, seven hundred thirty-nine".