65695140 has 144 divisors (see below), whose sum is σ = 241218432. Its totient is φ = 14128128.

The previous prime is 65695139. The next prime is 65695159. The reversal of 65695140 is 4159656.

65695140 = T₁₉₂₀ + T₁₉₂₁ + ... + T₁₉₅₄.

65695140 is a `hidden beast` number, since 6 + 569 + 51 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 65695095 and 65695104.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19887 + ... + 22953.

It is an arithmetic number, because the mean of its divisors is an integer number (1675128).

Almost surely, 2^65695140 is an apocalyptic number.

65695140 is a gapful number since it is divisible by the number (60) 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 65695140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120609216).

65695140 is an abundant number, since it is smaller than the sum of its proper divisors (175523292).

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

65695140 is a wasteful number, since it uses less digits than its factorization.

65695140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106 (or 3101 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 65695140 is about 8105.2538516693. The cubic root of 65695140 is about 403.5008130514.

The spelling of 65695140 in words is "sixty-five million, six hundred ninety-five thousand, one hundred forty".