70622644 has 6 divisors (see below), whose sum is σ = 123589634. Its totient is φ = 35311320.

The previous prime is 70622633. The next prime is 70622647. The reversal of 70622644 is 44622607.

It can be written as a sum of positive squares in only one way, i.e., 37675044 + 32947600 = 6138^2 + 5740^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70622647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8827827 + ... + 8827834.

Almost surely, 2^70622644 is an apocalyptic number.

It is an amenable number.

70622644 is a deficient number, since it is larger than the sum of its proper divisors (52966990).

70622644 is a wasteful number, since it uses less digits than its factorization.

70622644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17655665 (or 17655663 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 70622644 is about 8403.7279822707. The cubic root of 70622644 is about 413.3468740506.

The spelling of 70622644 in words is "seventy million, six hundred twenty-two thousand, six hundred forty-four".