646226054 has 4 divisors (see below), whose sum is σ = 969339084. Its totient is φ = 323113026.

The previous prime is 646226047. The next prime is 646226069. The reversal of 646226054 is 450622646.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×646226054² = 835216225736821832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161556512 + ... + 161556515.

It is an arithmetic number, because the mean of its divisors is an integer number (242334771).

Almost surely, 2^646226054 is an apocalyptic number.

646226054 is a deficient number, since it is larger than the sum of its proper divisors (323113030).

646226054 is a wasteful number, since it uses less digits than its factorization.

646226054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323113029.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 646226054 is about 25420.9766531501. The cubic root of 646226054 is about 864.5593683942.

The spelling of 646226054 in words is "six hundred forty-six million, two hundred twenty-six thousand, fifty-four".