64340660 has 24 divisors (see below), whose sum is σ = 140990976. Its totient is φ = 24617120.

The previous prime is 64340657. The next prime is 64340663. The reversal of 64340660 is 6604346.

It is an interprime number because it is at equal distance from previous prime (64340657) and next prime (64340663).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64340663) 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, 69476 + ... + 70395.

It is an arithmetic number, because the mean of its divisors is an integer number (5874624).

Almost surely, 2^64340660 is an apocalyptic number.

It is an amenable number.

64340660 is an abundant number, since it is smaller than the sum of its proper divisors (76650316).

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

64340660 is a wasteful number, since it uses less digits than its factorization.

64340660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139903 (or 139901 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 64340660 is about 8021.2629928210. The cubic root of 64340660 is about 400.7084528290.

The spelling of 64340660 in words is "sixty-four million, three hundred forty thousand, six hundred sixty".