65221674 has 32 divisors (see below), whose sum is σ = 149323776. Its totient is φ = 18604080.

The previous prime is 65221657. The next prime is 65221691. The reversal of 65221674 is 47612256.

65221674 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (65221657) and next prime (65221691).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40839 + ... + 42405.

It is an arithmetic number, because the mean of its divisors is an integer number (4666368).

Almost surely, 2^65221674 is an apocalyptic number.

65221674 is an abundant number, since it is smaller than the sum of its proper divisors (84102102).

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

65221674 is a wasteful number, since it uses less digits than its factorization.

65221674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570.

The product of its digits is 20160, while the sum is 33.

The square root of 65221674 is about 8075.9936849901. The cubic root of 65221674 is about 402.5291292268.

The spelling of 65221674 in words is "sixty-five million, two hundred twenty-one thousand, six hundred seventy-four".