65257488 has 100 divisors (see below), whose sum is σ = 193431568. Its totient is φ = 21228480.

The previous prime is 65257487. The next prime is 65257541. The reversal of 65257488 is 88475256.

It is not an unprimeable number, because it can be changed into a prime (65257483) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 55143 + ... + 56313.

Almost surely, 2^65257488 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 65257488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96715784).

65257488 is an abundant number, since it is smaller than the sum of its proper divisors (128174080).

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

65257488 is a wasteful number, since it uses less digits than its factorization.

65257488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234 (or 1219 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 65257488 is about 8078.2106929691. The cubic root of 65257488 is about 402.6027935956.

The spelling of 65257488 in words is "sixty-five million, two hundred fifty-seven thousand, four hundred eighty-eight".