64079940 has 24 divisors (see below), whose sum is σ = 179424000. Its totient is φ = 17087968.

The previous prime is 64079923. The next prime is 64079957. The reversal of 64079940 is 4997046.

It is an interprime number because it is at equal distance from previous prime (64079923) and next prime (64079957).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 533940 + ... + 534059.

It is an arithmetic number, because the mean of its divisors is an integer number (7476000).

Almost surely, 2^64079940 is an apocalyptic number.

64079940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64079940 is an abundant number, since it is smaller than the sum of its proper divisors (115344060).

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

64079940 is a wasteful number, since it uses less digits than its factorization.

64079940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068011 (or 1068009 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 64079940 is about 8004.9946908165. The cubic root of 64079940 is about 400.1664723744.

The spelling of 64079940 in words is "sixty-four million, seventy-nine thousand, nine hundred forty".