70644007 has 4 divisors (see below), whose sum is σ = 80736016. Its totient is φ = 60552000.

The previous prime is 70643999. The next prime is 70644019. The reversal of 70644007 is 70044607.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70644007 - 2³ = 70643999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70644047) 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, 5045994 + ... + 5046007.

It is an arithmetic number, because the mean of its divisors is an integer number (20184004).

Almost surely, 2^70644007 is an apocalyptic number.

70644007 is a deficient number, since it is larger than the sum of its proper divisors (10092009).

70644007 is a wasteful number, since it uses less digits than its factorization.

70644007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10092008.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 70644007 is about 8404.9989292087. The cubic root of 70644007 is about 413.3885483094.

The spelling of 70644007 in words is "seventy million, six hundred forty-four thousand, seven".