64161692 has 48 divisors (see below), whose sum is σ = 133496832. Its totient is φ = 26403840.

The previous prime is 64161653. The next prime is 64161707. The reversal of 64161692 is 29616146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167333 + ... + 167715.

It is an arithmetic number, because the mean of its divisors is an integer number (2781184).

Almost surely, 2^64161692 is an apocalyptic number.

64161692 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64161692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66748416).

64161692 is an abundant number, since it is smaller than the sum of its proper divisors (69335140).

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

64161692 is a wasteful number, since it uses less digits than its factorization.

64161692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618 (or 616 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 64161692 is about 8010.0993751638. The cubic root of 64161692 is about 400.3365750470.

The spelling of 64161692 in words is "sixty-four million, one hundred sixty-one thousand, six hundred ninety-two".