70813745 has 8 divisors (see below), whose sum is σ = 87273384. Its totient is φ = 55119744.

The previous prime is 70813739. The next prime is 70813759. The reversal of 70813745 is 54731807.

It can be written as a sum of positive squares in 4 ways, for example, as 11723776 + 59089969 = 3424^2 + 7687^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70813745 - 2⁶ = 70813681 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191204 + ... + 191573.

It is an arithmetic number, because the mean of its divisors is an integer number (10909173).

Almost surely, 2^70813745 is an apocalyptic number.

It is an amenable number.

70813745 is a deficient number, since it is larger than the sum of its proper divisors (16459639).

70813745 is a wasteful number, since it uses less digits than its factorization.

70813745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382819.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 70813745 is about 8415.0903144292. The cubic root of 70813745 is about 413.7193695892.

The spelling of 70813745 in words is "seventy million, eight hundred thirteen thousand, seven hundred forty-five".