64494797 has 8 divisors (see below), whose sum is σ = 69468960. Its totient is φ = 59678640.

The previous prime is 64494761. The next prime is 64494817. The reversal of 64494797 is 79749446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64494797 - 2¹⁴ = 64478413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64494707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38654 + ... + 40287.

It is an arithmetic number, because the mean of its divisors is an integer number (8683620).

Almost surely, 2^64494797 is an apocalyptic number.

It is an amenable number.

64494797 is a deficient number, since it is larger than the sum of its proper divisors (4974163).

64494797 is a wasteful number, since it uses less digits than its factorization.

64494797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79003.

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

The square root of 64494797 is about 8030.8652709406. The cubic root of 64494797 is about 401.0281819237.

The spelling of 64494797 in words is "sixty-four million, four hundred ninety-four thousand, seven hundred ninety-seven".