64457049 has 8 divisors (see below), whose sum is σ = 85981120. Its totient is φ = 42952176.

The previous prime is 64457039. The next prime is 64457059. The reversal of 64457049 is 94075446.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (64457039) and next prime (64457059).

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

It is not a de Polignac number, because 64457049 - 2⁷ = 64456921 is a prime.

It is a super-2 number, since 2×64457049² = 8309422331576802, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64456998 and 64457016.

It is not an unprimeable number, because it can be changed into a prime (64457039) 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, 7659 + ... + 13695.

It is an arithmetic number, because the mean of its divisors is an integer number (10747640).

Almost surely, 2^64457049 is an apocalyptic number.

It is an amenable number.

64457049 is a deficient number, since it is larger than the sum of its proper divisors (21524071).

64457049 is a wasteful number, since it uses less digits than its factorization.

64457049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9599.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 64457049 is about 8028.5147443347. The cubic root of 64457049 is about 400.9499277242.

The spelling of 64457049 in words is "sixty-four million, four hundred fifty-seven thousand, forty-nine".