65620671 has 16 divisors (see below), whose sum is σ = 89485824. Its totient is φ = 42761664.

The previous prime is 65620669. The next prime is 65620673. The reversal of 65620671 is 17602656.

It is an interprime number because it is at equal distance from previous prime (65620669) and next prime (65620673).

It is not a de Polignac number, because 65620671 - 2¹ = 65620669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65620673) 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, 26346 + ... + 28728.

It is an arithmetic number, because the mean of its divisors is an integer number (5592864).

Almost surely, 2^65620671 is an apocalyptic number.

65620671 is a deficient number, since it is larger than the sum of its proper divisors (23865153).

65620671 is a wasteful number, since it uses less digits than its factorization.

65620671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 65620671 is about 8100.6586769225. The cubic root of 65620671 is about 403.3482920633.

The spelling of 65620671 in words is "sixty-five million, six hundred twenty thousand, six hundred seventy-one".