65605995 has 96 divisors (see below), whose sum is σ = 144074112. Its totient is φ = 26873856.

The previous prime is 65605987. The next prime is 65605999. The reversal of 65605995 is 59950656.

65605995 = T₁₁₅₅ + T₁₁₅₆ + ... + T₁₂₄₅.

65605995 is a `hidden beast` number, since 6 + 56 + 0 + 599 + 5 = 666.

It is not a de Polignac number, because 65605995 - 2³ = 65605987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 65605995.

It is not an unprimeable number, because it can be changed into a prime (65605999) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 151299 + ... + 151731.

It is an arithmetic number, because the mean of its divisors is an integer number (1500772).

Almost surely, 2^65605995 is an apocalyptic number.

65605995 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

65605995 is an abundant number, since it is smaller than the sum of its proper divisors (78468117).

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

65605995 is a wasteful number, since it uses less digits than its factorization.

65605995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 498 counting only the distinct ones).

The product of its (nonzero) digits is 364500, while the sum is 45.

The square root of 65605995 is about 8099.7527740049. The cubic root of 65605995 is about 403.3182203354.

The spelling of 65605995 in words is "sixty-five million, six hundred five thousand, nine hundred ninety-five".