64602240 has 64 divisors (see below), whose sum is σ = 205925760. Its totient is φ = 17226752.

The previous prime is 64602221. The next prime is 64602253. The reversal of 64602240 is 4220646.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 64602240.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14904 + ... + 18743.

It is an arithmetic number, because the mean of its divisors is an integer number (3217590).

Almost surely, 2^64602240 is an apocalyptic number.

64602240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64602240 is an abundant number, since it is smaller than the sum of its proper divisors (141323520).

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

64602240 is a wasteful number, since it uses less digits than its factorization.

64602240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33669 (or 33657 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 64602240 is about 8037.5518660846. The cubic root of 64602240 is about 401.2507516411.

Adding to 64602240 its reverse (4220646), we get a palindrome (68822886).

The spelling of 64602240 in words is "sixty-four million, six hundred two thousand, two hundred forty".