646894614 has 16 divisors (see below), whose sum is σ = 1295422128. Its totient is φ = 215359392.

The previous prime is 646894607. The next prime is 646894621. The reversal of 646894614 is 416498646.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (646894607) and next prime (646894621).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62857 + ... + 72420.

It is an arithmetic number, because the mean of its divisors is an integer number (80963883).

Almost surely, 2^646894614 is an apocalyptic number.

646894614 is an abundant number, since it is smaller than the sum of its proper divisors (648527514).

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

646894614 is a wasteful number, since it uses less digits than its factorization.

646894614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136079.

The product of its digits is 995328, while the sum is 48.

The square root of 646894614 is about 25434.1230240007. The cubic root of 646894614 is about 864.8574119831.

The spelling of 646894614 in words is "six hundred forty-six million, eight hundred ninety-four thousand, six hundred fourteen".