65998074 has 32 divisors (see below), whose sum is σ = 134110080. Its totient is φ = 21650112.

The previous prime is 65998073. The next prime is 65998081. The reversal of 65998074 is 47089956.

It is not an unprimeable number, because it can be changed into a prime (65998073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166044 + ... + 166440.

It is an arithmetic number, because the mean of its divisors is an integer number (4190940).

Almost surely, 2^65998074 is an apocalyptic number.

65998074 is an abundant number, since it is smaller than the sum of its proper divisors (68112006).

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

65998074 is a wasteful number, since it uses less digits than its factorization.

65998074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 65998074 is about 8123.9198666654. The cubic root of 65998074 is about 404.1200709996.

The spelling of 65998074 in words is "sixty-five million, nine hundred ninety-eight thousand, seventy-four".