64474997 has 2 divisors, whose sum is σ = 64474998. Its totient is φ = 64474996.

The previous prime is 64474973. The next prime is 64475039. The reversal of 64474997 is 79947446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58354321 + 6120676 = 7639^2 + 2474^2 .

It is a cyclic number.

It is not a de Polignac number, because 64474997 - 2¹⁴ = 64458613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64474937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32237498 + 32237499.

It is an arithmetic number, because the mean of its divisors is an integer number (32237499).

Almost surely, 2^64474997 is an apocalyptic number.

It is an amenable number.

64474997 is a deficient number, since it is larger than the sum of its proper divisors (1).

64474997 is an equidigital number, since it uses as much as digits as its factorization.

64474997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 50.

The square root of 64474997 is about 8029.6324324343. The cubic root of 64474997 is about 400.9871389710.

The spelling of 64474997 in words is "sixty-four million, four hundred seventy-four thousand, nine hundred ninety-seven".