646022701 has 8 divisors (see below), whose sum is σ = 668552544. Its totient is φ = 623759760.

The previous prime is 646022677. The next prime is 646022717. The reversal of 646022701 is 107220646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 646022701 - 2⁹ = 646022189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 646022701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646022731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61795 + ... + 71488.

It is an arithmetic number, because the mean of its divisors is an integer number (83569068).

Almost surely, 2^646022701 is an apocalyptic number.

It is an amenable number.

646022701 is a deficient number, since it is larger than the sum of its proper divisors (22529843).

646022701 is a wasteful number, since it uses less digits than its factorization.

646022701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133451.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 646022701 is about 25416.9766298039. The cubic root of 646022701 is about 864.4686729971.

It can be divided in two parts, 6460 and 22701, that added together give a triangular number (29161 = T₂₄₁).

The spelling of 646022701 in words is "six hundred forty-six million, twenty-two thousand, seven hundred one".