65804895 has 48 divisors (see below), whose sum is σ = 123675552. Its totient is φ = 32175360.

The previous prime is 65804891. The next prime is 65804899. The reversal of 65804895 is 59840856.

It is an interprime number because it is at equal distance from previous prime (65804891) and next prime (65804899).

It is not a de Polignac number, because 65804895 - 2² = 65804891 is a prime.

It is a super-2 number, since 2×65804895² = 8660568411922050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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 65804895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65804891) 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, 114960 + ... + 115530.

It is an arithmetic number, because the mean of its divisors is an integer number (2576574).

Almost surely, 2^65804895 is an apocalyptic number.

65804895 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

65804895 is a deficient number, since it is larger than the sum of its proper divisors (57870657).

65804895 is a wasteful number, since it uses less digits than its factorization.

65804895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792 (or 789 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 65804895 is about 8112.0216345865. The cubic root of 65804895 is about 403.7253938044.

The spelling of 65804895 in words is "sixty-five million, eight hundred four thousand, eight hundred ninety-five".