70561065 has 16 divisors (see below), whose sum is σ = 115524288. Its totient is φ = 36757056.

The previous prime is 70561061. The next prime is 70561087. The reversal of 70561065 is 56016507.

It is not a de Polignac number, because 70561065 - 2² = 70561061 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70561061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54054 + ... + 55343.

It is an arithmetic number, because the mean of its divisors is an integer number (7220268).

Almost surely, 2^70561065 is an apocalyptic number.

It is an amenable number.

70561065 is a deficient number, since it is larger than the sum of its proper divisors (44963223).

70561065 is a wasteful number, since it uses less digits than its factorization.

70561065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109448.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 70561065 is about 8400.0633926179. The cubic root of 70561065 is about 413.2267006552.

The spelling of 70561065 in words is "seventy million, five hundred sixty-one thousand, sixty-five".