65087556 has 12 divisors (see below), whose sum is σ = 151870992. Its totient is φ = 21695848.

The previous prime is 65087537. The next prime is 65087557. The reversal of 65087556 is 65578056.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (65087557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2711970 + ... + 2711993.

It is an arithmetic number, because the mean of its divisors is an integer number (12655916).

Almost surely, 2^65087556 is an apocalyptic number.

It is an amenable number.

65087556 is an abundant number, since it is smaller than the sum of its proper divisors (86783436).

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

65087556 is a wasteful number, since it uses less digits than its factorization.

65087556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5423970 (or 5423968 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 42.

The square root of 65087556 is about 8067.6859135690. The cubic root of 65087556 is about 402.2530275079.

The spelling of 65087556 in words is "sixty-five million, eighty-seven thousand, five hundred fifty-six".