70290644 has 6 divisors (see below), whose sum is σ = 123008634. Its totient is φ = 35145320.

The previous prime is 70290643. The next prime is 70290659. The reversal of 70290644 is 44609207.

It can be written as a sum of positive squares in only one way, i.e., 66912400 + 3378244 = 8180^2 + 1838^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 70290644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70290643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8786327 + ... + 8786334.

It is an arithmetic number, because the mean of its divisors is an integer number (20501439).

Almost surely, 2^70290644 is an apocalyptic number.

It is an amenable number.

70290644 is a deficient number, since it is larger than the sum of its proper divisors (52717990).

70290644 is a wasteful number, since it uses less digits than its factorization.

70290644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17572665 (or 17572663 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 70290644 is about 8383.9515742876. The cubic root of 70290644 is about 412.6981360966.

The spelling of 70290644 in words is "seventy million, two hundred ninety thousand, six hundred forty-four".