64499340 has 24 divisors (see below), whose sum is σ = 180598320. Its totient is φ = 17199808.

The previous prime is 64499339. The next prime is 64499353. The reversal of 64499340 is 4399446.

64499340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537435 + ... + 537554.

It is an arithmetic number, because the mean of its divisors is an integer number (7524930).

Almost surely, 2^64499340 is an apocalyptic number.

64499340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64499340 is an abundant number, since it is smaller than the sum of its proper divisors (116098980).

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

64499340 is a wasteful number, since it uses less digits than its factorization.

64499340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075001 (or 1074999 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 64499340 is about 8031.1481121942. The cubic root of 64499340 is about 401.0375978163.

The spelling of 64499340 in words is "sixty-four million, four hundred ninety-nine thousand, three hundred forty".