65689330 has 32 divisors (see below), whose sum is σ = 135553536. Its totient is φ = 22451904.

The previous prime is 65689301. The next prime is 65689331. The reversal of 65689330 is 3398656.

It is not an unprimeable number, because it can be changed into a prime (65689331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24412 + ... + 26968.

It is an arithmetic number, because the mean of its divisors is an integer number (4236048).

Almost surely, 2^65689330 is an apocalyptic number.

65689330 is an abundant number, since it is smaller than the sum of its proper divisors (69864206).

65689330 is a wasteful number, since it uses less digits than its factorization.

65689330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 65689330 is about 8104.8954342422. The cubic root of 65689330 is about 403.4889176569.

The spelling of 65689330 in words is "sixty-five million, six hundred eighty-nine thousand, three hundred thirty".