70064669 has 4 divisors (see below), whose sum is σ = 70178844. Its totient is φ = 69950496.

The previous prime is 70064663. The next prime is 70064671. The reversal of 70064669 is 96646007.

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 5583769 + 64480900 = 2363^2 + 8030^2 .

It is a cyclic number.

It is not a de Polignac number, because 70064669 - 2⁸ = 70064413 is a prime.

It is a super-2 number, since 2×70064669² = 9818115684159122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70064663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56162 + ... + 57395.

It is an arithmetic number, because the mean of its divisors is an integer number (17544711).

Almost surely, 2^70064669 is an apocalyptic number.

It is an amenable number.

70064669 is a deficient number, since it is larger than the sum of its proper divisors (114175).

70064669 is a wasteful number, since it uses less digits than its factorization.

70064669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114174.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 70064669 is about 8370.4640851030. The cubic root of 70064669 is about 412.2554049176.

The spelling of 70064669 in words is "seventy million, sixty-four thousand, six hundred sixty-nine".