70616665 has 16 divisors (see below), whose sum is σ = 97149312. Its totient is φ = 48271104.

The previous prime is 70616659. The next prime is 70616717. The reversal of 70616665 is 56661607.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-70616665 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8802 + ... + 14788.

It is an arithmetic number, because the mean of its divisors is an integer number (6071832).

Almost surely, 2^70616665 is an apocalyptic number.

It is an amenable number.

70616665 is a deficient number, since it is larger than the sum of its proper divisors (26532647).

70616665 is a wasteful number, since it uses less digits than its factorization.

70616665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6336.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 70616665 is about 8403.3722397618. The cubic root of 70616665 is about 413.3352089029.

It can be divided in two parts, 706 and 16665, that added together give a palindrome (17371).

The spelling of 70616665 in words is "seventy million, six hundred sixteen thousand, six hundred sixty-five".