64741740 has 216 divisors, whose sum is σ = 226204272. Its totient is φ = 13789440.

The previous prime is 64741687. The next prime is 64741751. The reversal of 64741740 is 4714746.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1061310 + ... + 1061370.

It is an arithmetic number, because the mean of its divisors is an integer number (1047242).

Almost surely, 2^64741740 is an apocalyptic number.

64741740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64741740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113102136).

64741740 is an abundant number, since it is smaller than the sum of its proper divisors (161462532).

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

64741740 is a wasteful number, since it uses less digits than its factorization.

64741740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 64741740 is about 8046.2252019192. The cubic root of 64741740 is about 401.5393599943.

The spelling of 64741740 in words is "sixty-four million, seven hundred forty-one thousand, seven hundred forty".