649572275946 has 64 divisors (see below), whose sum is σ = 1455744110976. Its totient is φ = 191494886400.

The previous prime is 649572275939. The next prime is 649572276019.

649572275946 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27243246 + ... + 27267078.

It is an arithmetic number, because the mean of its divisors is an integer number (22746001734).

Almost surely, 2^649572275946 is an apocalyptic number.

649572275946 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

649572275946 is an abundant number, since it is smaller than the sum of its proper divisors (806171835030).

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

649572275946 is a wasteful number, since it uses less digits than its factorization.

649572275946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35047.

The product of its digits is 228614400, while the sum is 66.

The spelling of 649572275946 in words is "six hundred forty-nine billion, five hundred seventy-two million, two hundred seventy-five thousand, nine hundred forty-six".