64691148 has 24 divisors (see below), whose sum is σ = 151579120. Its totient is φ = 21473280.

The previous prime is 64691093. The next prime is 64691149. The reversal of 64691148 is 84119646.

It is not an unprimeable number, because it can be changed into a prime (64691149) 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, 8293 + ... + 14076.

Almost surely, 2^64691148 is an apocalyptic number.

It is an amenable number.

64691148 is an abundant number, since it is smaller than the sum of its proper divisors (86887972).

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

64691148 is a wasteful number, since it uses less digits than its factorization.

64691148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22617 (or 22615 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 64691148 is about 8043.0807530448. The cubic root of 64691148 is about 401.4347393215.

The spelling of 64691148 in words is "sixty-four million, six hundred ninety-one thousand, one hundred forty-eight".