65145696 has 144 divisors (see below), whose sum is σ = 217183680. Its totient is φ = 16907520.

The previous prime is 65145677. The next prime is 65145697. The reversal of 65145696 is 69654156.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65145697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51115 + ... + 52373.

It is an arithmetic number, because the mean of its divisors is an integer number (1508220).

Almost surely, 2^65145696 is an apocalyptic number.

65145696 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65145696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108591840).

65145696 is an abundant number, since it is smaller than the sum of its proper divisors (152037984).

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

65145696 is a wasteful number, since it uses less digits than its factorization.

65145696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297 (or 1282 counting only the distinct ones).

The product of its digits is 194400, while the sum is 42.

The square root of 65145696 is about 8071.2883729923. The cubic root of 65145696 is about 402.3727638158.

The spelling of 65145696 in words is "sixty-five million, one hundred forty-five thousand, six hundred ninety-six".