64429497 has 24 divisors (see below), whose sum is σ = 102761568. Its totient is φ = 38572800.

The previous prime is 64429459. The next prime is 64429529. The reversal of 64429497 is 79492446.

It is not a de Polignac number, because 64429497 - 2¹² = 64425401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64429427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4297 + ... + 12137.

It is an arithmetic number, because the mean of its divisors is an integer number (4281732).

Almost surely, 2^64429497 is an apocalyptic number.

It is an amenable number.

64429497 is a deficient number, since it is larger than the sum of its proper divisors (38332071).

64429497 is a wasteful number, since it uses less digits than its factorization.

64429497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7941 (or 7938 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 64429497 is about 8026.7986769322. The cubic root of 64429497 is about 400.8927912436.

The spelling of 64429497 in words is "sixty-four million, four hundred twenty-nine thousand, four hundred ninety-seven".