65129364 has 18 divisors (see below), whose sum is σ = 164632650. Its totient is φ = 21709776.

The previous prime is 65129327. The next prime is 65129371. The reversal of 65129364 is 46392156.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 58064400 + 7064964 = 7620^2 + 2658^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1809149 = 65129364 / (6 + 5 + 1 + 2 + 9 + 3 + 6 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 904539 + ... + 904610.

Almost surely, 2^65129364 is an apocalyptic number.

It is an amenable number.

65129364 is an abundant number, since it is smaller than the sum of its proper divisors (99503286).

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

65129364 is a wasteful number, since it uses less digits than its factorization.

65129364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809159 (or 1809154 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 65129364 is about 8070.2765751863. The cubic root of 65129364 is about 402.3391361083.

It can be divided in two parts, 6512 and 9364, that added together give a square (15876 = 126²).

The spelling of 65129364 in words is "sixty-five million, one hundred twenty-nine thousand, three hundred sixty-four".