65665050 has 96 divisors (see below), whose sum is σ = 188184384. Its totient is φ = 14976000.

The previous prime is 65665043. The next prime is 65665057. The reversal of 65665050 is 5056656.

It is an interprime number because it is at equal distance from previous prime (65665043) and next prime (65665057).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (65665057) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26880 + ... + 29220.

It is an arithmetic number, because the mean of its divisors is an integer number (1960254).

Almost surely, 2^65665050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65665050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94092192).

65665050 is an abundant number, since it is smaller than the sum of its proper divisors (122519334).

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

65665050 is a wasteful number, since it uses less digits than its factorization.

65665050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2384 (or 2379 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 65665050 is about 8103.3974356439. The cubic root of 65665050 is about 403.4391991907.

The spelling of 65665050 in words is "sixty-five million, six hundred sixty-five thousand, fifty".