65990774 has 8 divisors (see below), whose sum is σ = 99966528. Its totient is φ = 32668600.

The previous prime is 65990731. The next prime is 65990783. The reversal of 65990774 is 47709956.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 163142 + ... + 163545.

It is an arithmetic number, because the mean of its divisors is an integer number (12495816).

Almost surely, 2^65990774 is an apocalyptic number.

65990774 is a deficient number, since it is larger than the sum of its proper divisors (33975754).

65990774 is a wasteful number, since it uses less digits than its factorization.

65990774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326790.

The product of its (nonzero) digits is 476280, while the sum is 47.

The square root of 65990774 is about 8123.4705637431. The cubic root of 65990774 is about 404.1051706391.

The spelling of 65990774 in words is "sixty-five million, nine hundred ninety thousand, seven hundred seventy-four".