6491613400 has 48 divisors (see below), whose sum is σ = 15242484240. Its totient is φ = 2570928000.

The previous prime is 6491613383. The next prime is 6491613409. The reversal of 6491613400 is 43161946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6491613409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140484 + ... + 180883.

It is an arithmetic number, because the mean of its divisors is an integer number (317551755).

Almost surely, 2^6491613400 is an apocalyptic number.

It is an amenable number.

6491613400 is an abundant number, since it is smaller than the sum of its proper divisors (8750870840).

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

6491613400 is a wasteful number, since it uses less digits than its factorization.

6491613400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321484 (or 321475 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 6491613400 is about 80570.5492099936. The cubic root of 6491613400 is about 1865.4525899312.

The spelling of 6491613400 in words is "six billion, four hundred ninety-one million, six hundred thirteen thousand, four hundred".