70770565 has 4 divisors (see below), whose sum is σ = 84924684. Its totient is φ = 56616448.

The previous prime is 70770547. The next prime is 70770577. The reversal of 70770565 is 56507707.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18671041 + 52099524 = 4321^2 + 7218^2 .

It is a cyclic number.

It is not a de Polignac number, because 70770565 - 2⁵ = 70770533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7077052 + ... + 7077061.

It is an arithmetic number, because the mean of its divisors is an integer number (21231171).

Almost surely, 2^70770565 is an apocalyptic number.

It is an amenable number.

70770565 is a deficient number, since it is larger than the sum of its proper divisors (14154119).

70770565 is a wasteful number, since it uses less digits than its factorization.

70770565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14154118.

The product of its (nonzero) digits is 51450, while the sum is 37.

The square root of 70770565 is about 8412.5242941700. The cubic root of 70770565 is about 413.6352614609.

The spelling of 70770565 in words is "seventy million, seven hundred seventy thousand, five hundred sixty-five".