64801140 has 48 divisors (see below), whose sum is σ = 182068992. Its totient is φ = 17220736.

The previous prime is 64801117. The next prime is 64801157. The reversal of 64801140 is 4110846.

It is a self number, because there is not a number n which added to its sum of digits gives 64801140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17317 + ... + 20723.

It is an arithmetic number, because the mean of its divisors is an integer number (3793104).

Almost surely, 2^64801140 is an apocalyptic number.

64801140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64801140 is an abundant number, since it is smaller than the sum of its proper divisors (117267852).

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

64801140 is a wasteful number, since it uses less digits than its factorization.

64801140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3736 (or 3734 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 64801140 is about 8049.9155275071. The cubic root of 64801140 is about 401.6621254477.

Adding to 64801140 its reverse (4110846), we get a palindrome (68911986).

The spelling of 64801140 in words is "sixty-four million, eight hundred one thousand, one hundred forty".