70665505 has 4 divisors (see below), whose sum is σ = 84798612. Its totient is φ = 56532400.

The previous prime is 70665473. The next prime is 70665563. The reversal of 70665505 is 50556607.

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 11943936 + 58721569 = 3456^2 + 7663^2 .

It is not a de Polignac number, because 70665505 - 2⁵ = 70665473 is a prime.

It is a super-2 number, since 2×70665505² = 9987227193810050, which contains 22 as substring.

It is a Duffinian 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, 7066546 + ... + 7066555.

It is an arithmetic number, because the mean of its divisors is an integer number (21199653).

Almost surely, 2^70665505 is an apocalyptic number.

It is an amenable number.

70665505 is a deficient number, since it is larger than the sum of its proper divisors (14133107).

70665505 is a wasteful number, since it uses less digits than its factorization.

70665505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14133106.

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 70665505 is about 8406.2777137090. The cubic root of 70665505 is about 413.4304774414.

The spelling of 70665505 in words is "seventy million, six hundred sixty-five thousand, five hundred five".