64117494 has 96 divisors (see below), whose sum is σ = 168569856. Its totient is φ = 17884800.

The previous prime is 64117477. The next prime is 64117511. The reversal of 64117494 is 49471146.

64117494 is a `hidden beast` number, since 641 + 1 + 7 + 4 + 9 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (64117477) and next prime (64117511).

It is a super-2 number, since 2×64117494² = 8222106073680072, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 159694 + ... + 160094.

It is an arithmetic number, because the mean of its divisors is an integer number (1755936).

Almost surely, 2^64117494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64117494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84284928).

64117494 is an abundant number, since it is smaller than the sum of its proper divisors (104452362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64117494 is a wasteful number, since it uses less digits than its factorization.

64117494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 460 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 64117494 is about 8007.3400077679. The cubic root of 64117494 is about 400.2446295272.

The spelling of 64117494 in words is "sixty-four million, one hundred seventeen thousand, four hundred ninety-four".