647762046 has 16 divisors (see below), whose sum is σ = 1311133824. Its totient is φ = 213319064.

The previous prime is 647762029. The next prime is 647762047. The reversal of 647762046 is 640267746.

It is a super-2 number, since 2×647762046² = 839191336476212232, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 647761989 and 647762007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647762047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 649866 + ... + 650861.

It is an arithmetic number, because the mean of its divisors is an integer number (81945864).

Almost surely, 2^647762046 is an apocalyptic number.

647762046 is an abundant number, since it is smaller than the sum of its proper divisors (663371778).

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

647762046 is a wasteful number, since it uses less digits than its factorization.

647762046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300815.

The product of its (nonzero) digits is 338688, while the sum is 42.

The square root of 647762046 is about 25451.1698355891. The cubic root of 647762046 is about 865.2438066688.

The spelling of 647762046 in words is "six hundred forty-seven million, seven hundred sixty-two thousand, forty-six".