646413026 has 8 divisors (see below), whose sum is σ = 1108136640. Its totient is φ = 277034148.

The previous prime is 646412993. The next prime is 646413067. The reversal of 646413026 is 620314646.

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

It is a junction number, because it is equal to n+sod(n) for n = 646412983 and 646413001.

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, 23086166 + ... + 23086193.

It is an arithmetic number, because the mean of its divisors is an integer number (138517080).

Almost surely, 2^646413026 is an apocalyptic number.

646413026 is a deficient number, since it is larger than the sum of its proper divisors (461723614).

646413026 is a wasteful number, since it uses less digits than its factorization.

646413026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46172368.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 646413026 is about 25424.6539012825. The cubic root of 646413026 is about 864.6427410808.

The spelling of 646413026 in words is "six hundred forty-six million, four hundred thirteen thousand, twenty-six".