64649060 has 48 divisors (see below), whose sum is σ = 156164736. Its totient is φ = 22021632.

The previous prime is 64649059. The next prime is 64649063. The reversal of 64649060 is 6094646.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 64649060.

It is not an unprimeable number, because it can be changed into a prime (64649063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21404 + ... + 24236.

It is an arithmetic number, because the mean of its divisors is an integer number (3253432).

Almost surely, 2^64649060 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 64649060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78082368).

64649060 is an abundant number, since it is smaller than the sum of its proper divisors (91515676).

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

64649060 is a wasteful number, since it uses less digits than its factorization.

64649060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3012 (or 3010 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 64649060 is about 8040.4639169640. The cubic root of 64649060 is about 401.3476627469.

The spelling of 64649060 in words is "sixty-four million, six hundred forty-nine thousand, sixty".