646143414 has 16 divisors (see below), whose sum is σ = 1476899328. Its totient is φ = 184612392.

The previous prime is 646143383. The next prime is 646143427. The reversal of 646143414 is 414341646.

It is a super-2 number, since 2×646143414² = 835002622911150792, 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 in 7 ways as a sum of consecutive naturals, for example, 7692142 + ... + 7692225.

It is an arithmetic number, because the mean of its divisors is an integer number (92306208).

Almost surely, 2^646143414 is an apocalyptic number.

646143414 is an abundant number, since it is smaller than the sum of its proper divisors (830755914).

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

646143414 is a wasteful number, since it uses less digits than its factorization.

646143414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15384379.

The product of its digits is 27648, while the sum is 33.

The square root of 646143414 is about 25419.3511718926. The cubic root of 646143414 is about 864.5225132661.

The spelling of 646143414 in words is "six hundred forty-six million, one hundred forty-three thousand, four hundred fourteen".