70648565 has 8 divisors (see below), whose sum is σ = 91299768. Its totient is φ = 52171200.

The previous prime is 70648559. The next prime is 70648607. The reversal of 70648565 is 56584607.

It can be written as a sum of positive squares in 4 ways, for example, as 7890481 + 62758084 = 2809^2 + 7922^2 .

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

It is not a de Polignac number, because 70648565 - 2¹⁴ = 70632181 is a prime.

It is a Duffinian number.

It is a Curzon 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, 543386 + ... + 543515.

It is an arithmetic number, because the mean of its divisors is an integer number (11412471).

Almost surely, 2^70648565 is an apocalyptic number.

It is an amenable number.

70648565 is a deficient number, since it is larger than the sum of its proper divisors (20651203).

70648565 is a wasteful number, since it uses less digits than its factorization.

70648565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086919.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 70648565 is about 8405.2700729959. The cubic root of 70648565 is about 413.3974388229.

The spelling of 70648565 in words is "seventy million, six hundred forty-eight thousand, five hundred sixty-five".