65153838 has 32 divisors (see below), whose sum is σ = 135136512. Its totient is φ = 20926400.

The previous prime is 65153819. The next prime is 65153849. The reversal of 65153838 is 83835156.

It is a super-2 number, since 2×65153838² = 8490045212260488, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 65153796 and 65153805.

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, 18823 + ... + 22013.

It is an arithmetic number, because the mean of its divisors is an integer number (4223016).

Almost surely, 2^65153838 is an apocalyptic number.

65153838 is an abundant number, since it is smaller than the sum of its proper divisors (69982674).

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

65153838 is a wasteful number, since it uses less digits than its factorization.

65153838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320.

The product of its digits is 86400, while the sum is 39.

The square root of 65153838 is about 8071.7927376761. The cubic root of 65153838 is about 402.3895261540.

The spelling of 65153838 in words is "sixty-five million, one hundred fifty-three thousand, eight hundred thirty-eight".