65205930 has 16 divisors (see below), whose sum is σ = 156494304. Its totient is φ = 17388240.

The previous prime is 65205923. The next prime is 65205937. The reversal of 65205930 is 3950256.

It is an interprime number because it is at equal distance from previous prime (65205923) and next prime (65205937).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2173531 = 65205930 / (6 + 5 + 2 + 0 + 5 + 9 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (65205937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1086736 + ... + 1086795.

It is an arithmetic number, because the mean of its divisors is an integer number (9780894).

Almost surely, 2^65205930 is an apocalyptic number.

65205930 is an abundant number, since it is smaller than the sum of its proper divisors (91288374).

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

65205930 is a wasteful number, since it uses less digits than its factorization.

65205930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173541.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 65205930 is about 8075.0188854268. The cubic root of 65205930 is about 402.4967374965.

The spelling of 65205930 in words is "sixty-five million, two hundred five thousand, nine hundred thirty".