70718409 has 24 divisors (see below), whose sum is σ = 107707392. Its totient is φ = 44645760.

The previous prime is 70718383. The next prime is 70718411. The reversal of 70718409 is 90481707.

It is not a de Polignac number, because 70718409 - 2¹³ = 70710217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70711409) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 10417 + ... + 15809.

It is an arithmetic number, because the mean of its divisors is an integer number (4487808).

Almost surely, 2^70718409 is an apocalyptic number.

It is an amenable number.

70718409 is a deficient number, since it is larger than the sum of its proper divisors (36988983).

70718409 is a wasteful number, since it uses less digits than its factorization.

70718409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5477 (or 5474 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 70718409 is about 8409.4238209285. The cubic root of 70718409 is about 413.5336238070.

The spelling of 70718409 in words is "seventy million, seven hundred eighteen thousand, four hundred nine".