64149648 has 40 divisors (see below), whose sum is σ = 167200608. Its totient is φ = 21192192.

The previous prime is 64149647. The next prime is 64149649. The reversal of 64149648 is 84694146.

It is an interprime number because it is at equal distance from previous prime (64149647) and next prime (64149649).

It is not an unprimeable number, because it can be changed into a prime (64149647) 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, 490 + ... + 11337.

Almost surely, 2^64149648 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 64149648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83600304).

64149648 is an abundant number, since it is smaller than the sum of its proper divisors (103050960).

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

64149648 is a wasteful number, since it uses less digits than its factorization.

64149648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11951 (or 11945 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 64149648 is about 8009.3475389697. The cubic root of 64149648 is about 400.3115239857.

The spelling of 64149648 in words is "sixty-four million, one hundred forty-nine thousand, six hundred forty-eight".