65949156 has 144 divisors (see below), whose sum is σ = 210607488. Its totient is φ = 16934400.

The previous prime is 65949139. The next prime is 65949181. The reversal of 65949156 is 65194956.

It is a happy number.

65949156 is a `hidden beast` number, since 6 + 594 + 9 + 1 + 56 = 666.

It is a super-2 number, since 2×65949156² = 8698582354224672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 134071 + ... + 134561.

It is an arithmetic number, because the mean of its divisors is an integer number (1462552).

Almost surely, 2^65949156 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 65949156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105303744).

65949156 is an abundant number, since it is smaller than the sum of its proper divisors (144658332).

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

65949156 is a wasteful number, since it uses less digits than its factorization.

65949156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 557 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 65949156 is about 8120.9085698584. The cubic root of 65949156 is about 404.0202012576.

The spelling of 65949156 in words is "sixty-five million, nine hundred forty-nine thousand, one hundred fifty-six".