65691622 has 4 divisors (see below), whose sum is σ = 98537436. Its totient is φ = 32845810.

The previous prime is 65691617. The next prime is 65691629. The reversal of 65691622 is 22619656.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65691629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16422904 + ... + 16422907.

It is an arithmetic number, because the mean of its divisors is an integer number (24634359).

Almost surely, 2^65691622 is an apocalyptic number.

65691622 is a deficient number, since it is larger than the sum of its proper divisors (32845814).

65691622 is a wasteful number, since it uses less digits than its factorization.

65691622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32845813.

The product of its digits is 38880, while the sum is 37.

The square root of 65691622 is about 8105.0368290342. The cubic root of 65691622 is about 403.4936103816.

The spelling of 65691622 in words is "sixty-five million, six hundred ninety-one thousand, six hundred twenty-two".