70615565 has 8 divisors (see below), whose sum is σ = 85183488. Its totient is φ = 56195920.

The previous prime is 70615553. The next prime is 70615579. The reversal of 70615565 is 56551607.

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

It is not a de Polignac number, because 70615565 - 2⁴ = 70615549 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 7 ways as a sum of consecutive naturals, for example, 36017 + ... + 37926.

It is an arithmetic number, because the mean of its divisors is an integer number (10647936).

Almost surely, 2^70615565 is an apocalyptic number.

It is an amenable number.

70615565 is a deficient number, since it is larger than the sum of its proper divisors (14567923).

70615565 is a wasteful number, since it uses less digits than its factorization.

70615565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74139.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 70615565 is about 8403.3067895918. The cubic root of 70615565 is about 413.3330627094. Note that the first 3 decimals are identical.

The spelling of 70615565 in words is "seventy million, six hundred fifteen thousand, five hundred sixty-five".