646460061 has 8 divisors (see below), whose sum is σ = 928250400. Its totient is φ = 397821552.

The previous prime is 646460053. The next prime is 646460069. The reversal of 646460061 is 160064646.

It is an interprime number because it is at equal distance from previous prime (646460053) and next prime (646460069).

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

It is not a de Polignac number, because 646460061 - 2³ = 646460053 is a prime.

It is a super-2 number, since 2×646460061² = 835821220936247442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646460069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8287911 + ... + 8287988.

It is an arithmetic number, because the mean of its divisors is an integer number (116031300).

Almost surely, 2^646460061 is an apocalyptic number.

It is an amenable number.

646460061 is a deficient number, since it is larger than the sum of its proper divisors (281790339).

646460061 is a wasteful number, since it uses less digits than its factorization.

646460061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16575915.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 646460061 is about 25425.5788724662. The cubic root of 646460061 is about 864.6637119273.

The spelling of 646460061 in words is "six hundred forty-six million, four hundred sixty thousand, sixty-one".