64842700 has 72 divisors (see below), whose sum is σ = 156517760. Its totient is φ = 23155200.

The previous prime is 64842697. The next prime is 64842703. The reversal of 64842700 is 724846.

It is an interprime number because it is at equal distance from previous prime (64842697) and next prime (64842703).

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64842703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39496 + ... + 41104.

Almost surely, 2^64842700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64842700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78258880).

64842700 is an abundant number, since it is smaller than the sum of its proper divisors (91675060).

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

64842700 is a wasteful number, since it uses less digits than its factorization.

64842700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667 (or 1660 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 64842700 is about 8052.4965072951. The cubic root of 64842700 is about 401.7479753290.

The spelling of 64842700 in words is "sixty-four million, eight hundred forty-two thousand, seven hundred".