64942340 has 24 divisors (see below), whose sum is σ = 142309440. Its totient is φ = 24847328.

The previous prime is 64942307. The next prime is 64942349. The reversal of 64942340 is 4324946.

It is a junction number, because it is equal to n+sod(n) for n = 64942297 and 64942306.

It is not an unprimeable number, because it can be changed into a prime (64942349) 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, 70130 + ... + 71049.

It is an arithmetic number, because the mean of its divisors is an integer number (5929560).

Almost surely, 2^64942340 is an apocalyptic number.

It is an amenable number.

64942340 is an abundant number, since it is smaller than the sum of its proper divisors (77367100).

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

64942340 is a wasteful number, since it uses less digits than its factorization.

64942340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141211 (or 141209 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 64942340 is about 8058.6810335191. The cubic root of 64942340 is about 401.9536509190.

The spelling of 64942340 in words is "sixty-four million, nine hundred forty-two thousand, three hundred forty".