6461549397 has 24 divisors (see below), whose sum is σ = 9908533440. Its totient is φ = 4043571840.

The previous prime is 6461549383. The next prime is 6461549399. The reversal of 6461549397 is 7939451646.

6461549397 is a `hidden beast` number, since 6 + 4 + 6 + 1 + 549 + 3 + 97 = 666.

6461549397 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6461549397 - 2¹² = 6461545301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6461549399) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2272 + ... + 113702.

It is an arithmetic number, because the mean of its divisors is an integer number (412855560).

Almost surely, 2^6461549397 is an apocalyptic number.

It is an amenable number.

6461549397 is a deficient number, since it is larger than the sum of its proper divisors (3446984043).

6461549397 is a wasteful number, since it uses less digits than its factorization.

6461549397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111833 (or 111830 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 6461549397 is about 80383.7632672171. The cubic root of 6461549397 is about 1862.5683673956.

The spelling of 6461549397 in words is "six billion, four hundred sixty-one million, five hundred forty-nine thousand, three hundred ninety-seven".