65274144 has 96 divisors (see below), whose sum is σ = 186165504. Its totient is φ = 19906560.

The previous prime is 65274137. The next prime is 65274151. The reversal of 65274144 is 44147256.

It is an interprime number because it is at equal distance from previous prime (65274137) and next prime (65274151).

It is a tau number, because it is divible by the number of its divisors (96).

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, 240729 + ... + 240999.

It is an arithmetic number, because the mean of its divisors is an integer number (1939224).

Almost surely, 2^65274144 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 65274144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93082752).

65274144 is an abundant number, since it is smaller than the sum of its proper divisors (120891360).

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

65274144 is a wasteful number, since it uses less digits than its factorization.

65274144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 482 counting only the distinct ones).

The product of its digits is 26880, while the sum is 33.

The square root of 65274144 is about 8079.2415485613. The cubic root of 65274144 is about 402.6370434669.

The spelling of 65274144 in words is "sixty-five million, two hundred seventy-four thousand, one hundred forty-four".