64246346397 has 64 divisors (see below), whose sum is σ = 100739358720. Its totient is φ = 40403059200.

The previous prime is 64246346371. The next prime is 64246346441. The reversal of 64246346397 is 79364364246.

64246346397 is a `hidden beast` number, since 6 + 4 + 246 + 3 + 4 + 6 + 397 = 666.

It is not a de Polignac number, because 64246346397 - 2¹² = 64246342301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64246346317) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21125197 + ... + 21128237.

It is an arithmetic number, because the mean of its divisors is an integer number (1574052480).

Almost surely, 2^64246346397 is an apocalyptic number.

It is an amenable number.

64246346397 is a deficient number, since it is larger than the sum of its proper divisors (36493012323).

64246346397 is a wasteful number, since it uses less digits than its factorization.

64246346397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3711 (or 3705 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 54.

The spelling of 64246346397 in words is "sixty-four billion, two hundred forty-six million, three hundred forty-six thousand, three hundred ninety-seven".