64780652 has 24 divisors (see below), whose sum is σ = 119616000. Its totient is φ = 30612816.

The previous prime is 64780649. The next prime is 64780657. The reversal of 64780652 is 25608746.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (64780657) 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, 44813 + ... + 46235.

It is an arithmetic number, because the mean of its divisors is an integer number (4984000).

Almost surely, 2^64780652 is an apocalyptic number.

It is an amenable number.

64780652 is a deficient number, since it is larger than the sum of its proper divisors (54835348).

64780652 is a wasteful number, since it uses less digits than its factorization.

64780652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045 (or 2043 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 64780652 is about 8048.6428669683. The cubic root of 64780652 is about 401.6197901789.

The spelling of 64780652 in words is "sixty-four million, seven hundred eighty thousand, six hundred fifty-two".