65465172 has 72 divisors (see below), whose sum is σ = 175383936. Its totient is φ = 21342528.

The previous prime is 65465137. The next prime is 65465237. The reversal of 65465172 is 27156456.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44968 + ... + 46400.

It is an arithmetic number, because the mean of its divisors is an integer number (2435888).

Almost surely, 2^65465172 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 65465172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87691968).

65465172 is an abundant number, since it is smaller than the sum of its proper divisors (109918764).

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

65465172 is a wasteful number, since it uses less digits than its factorization.

65465172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499 (or 1485 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 65465172 is about 8091.0550609917. The cubic root of 65465172 is about 403.0294399779.

The spelling of 65465172 in words is "sixty-five million, four hundred sixty-five thousand, one hundred seventy-two".