64304036397 has 12 divisors (see below), whose sum is σ = 93705588444. Its totient is φ = 42489982080.

The previous prime is 64304036353. The next prime is 64304036431. The reversal of 64304036397 is 79363040346.

64304036397 is a `hidden beast` number, since 6 + 4 + 3 + 0 + 4 + 0 + 3 + 639 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4784627241 + 59519409156 = 69171^2 + 243966^2 .

It is not a de Polignac number, because 64304036397 - 2⁶ = 64304036333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64304036317) 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, 31613554 + ... + 31615587.

It is an arithmetic number, because the mean of its divisors is an integer number (7808799037).

Almost surely, 2^64304036397 is an apocalyptic number.

It is an amenable number.

64304036397 is a deficient number, since it is larger than the sum of its proper divisors (29401552047).

64304036397 is a wasteful number, since it uses less digits than its factorization.

64304036397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63229260 (or 63229257 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 45.

The spelling of 64304036397 in words is "sixty-four billion, three hundred four million, thirty-six thousand, three hundred ninety-seven".