65682890 has 64 divisors (see below), whose sum is σ = 147329280. Its totient is φ = 20528640.

The previous prime is 65682857. The next prime is 65682899. The reversal of 65682890 is 9828656.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (65682899) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80585 + ... + 81395.

It is an arithmetic number, because the mean of its divisors is an integer number (2302020).

Almost surely, 2^65682890 is an apocalyptic number.

65682890 is an abundant number, since it is smaller than the sum of its proper divisors (81646390).

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

65682890 is a wasteful number, since it uses less digits than its factorization.

65682890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 65682890 is about 8104.4981337526. The cubic root of 65682890 is about 403.4757315806.

The spelling of 65682890 in words is "sixty-five million, six hundred eighty-two thousand, eight hundred ninety".