64409858 has 8 divisors (see below), whose sum is σ = 96658380. Its totient is φ = 32190400.

The previous prime is 64409857. The next prime is 64409861. The reversal of 64409858 is 85890446.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 58323769 + 6086089 = 7637^2 + 2467^2 .

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

It is not an unprimeable number, because it can be changed into a prime (64409857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443 + ... + 11358.

Almost surely, 2^64409858 is an apocalyptic number.

64409858 is a deficient number, since it is larger than the sum of its proper divisors (32248522).

64409858 is a wasteful number, since it uses less digits than its factorization.

64409858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14532.

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 64409858 is about 8025.5752441803. The cubic root of 64409858 is about 400.8520545522.

The spelling of 64409858 in words is "sixty-four million, four hundred nine thousand, eight hundred fifty-eight".