646022448 has 60 divisors (see below), whose sum is σ = 1811846088. Its totient is φ = 214878720.

The previous prime is 646022407. The next prime is 646022483. The reversal of 646022448 is 844220646.

It is a happy number.

646022448 is a `hidden beast` number, since 6 + 4 + 602 + 2 + 4 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66136 + ... + 75272.

Almost surely, 2^646022448 is an apocalyptic number.

It is an amenable number.

646022448 is an abundant number, since it is smaller than the sum of its proper divisors (1165823640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646022448 is a wasteful number, since it uses less digits than its factorization.

646022448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9642 (or 9633 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

The square root of 646022448 is about 25416.9716528150. The cubic root of 646022448 is about 864.4685601473.

The spelling of 646022448 in words is "six hundred forty-six million, twenty-two thousand, four hundred forty-eight".