646655054 has 8 divisors (see below), whose sum is σ = 976161288. Its totient is φ = 321267960.

The previous prime is 646655041. The next prime is 646655081. The reversal of 646655054 is 450556646.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1029392 + ... + 1030019.

It is an arithmetic number, because the mean of its divisors is an integer number (122020161).

Almost surely, 2^646655054 is an apocalyptic number.

646655054 is a deficient number, since it is larger than the sum of its proper divisors (329506234).

646655054 is a wasteful number, since it uses less digits than its factorization.

646655054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059570.

The product of its (nonzero) digits is 432000, while the sum is 41.

The square root of 646655054 is about 25429.4131666462. The cubic root of 646655054 is about 864.7506399177.

The spelling of 646655054 in words is "six hundred forty-six million, six hundred fifty-five thousand, fifty-four".