6491698632 has 24 divisors (see below), whose sum is σ = 17581683990. Its totient is φ = 2163899520.

The previous prime is 6491698621. The next prime is 6491698637. The reversal of 6491698632 is 2368961946.

6491698632 is a `hidden beast` number, since 6 + 491 + 6 + 98 + 63 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3563373636 + 2928324996 = 59694^2 + 54114^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×6491698632² = 84284302257421342848, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (6491698637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45081169 + ... + 45081312.

Almost surely, 2^6491698632 is an apocalyptic number.

It is an amenable number.

6491698632 is an abundant number, since it is smaller than the sum of its proper divisors (11089985358).

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

6491698632 is a wasteful number, since it uses less digits than its factorization.

6491698632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90162493 (or 90162486 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The square root of 6491698632 is about 80571.0781360160. The cubic root of 6491698632 is about 1865.4607540834.

The spelling of 6491698632 in words is "six billion, four hundred ninety-one million, six hundred ninety-eight thousand, six hundred thirty-two".