65620151 has 4 divisors (see below), whose sum is σ = 65963904. Its totient is φ = 65276400.

The previous prime is 65620141. The next prime is 65620157. The reversal of 65620151 is 15102656.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65620151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65620151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65620157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171590 + ... + 171971.

It is an arithmetic number, because the mean of its divisors is an integer number (16490976).

Almost surely, 2^65620151 is an apocalyptic number.

65620151 is a deficient number, since it is larger than the sum of its proper divisors (343753).

65620151 is a wasteful number, since it uses less digits than its factorization.

65620151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343752.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 65620151 is about 8100.6265807035. The cubic root of 65620151 is about 403.3472266386.

The spelling of 65620151 in words is "sixty-five million, six hundred twenty thousand, one hundred fifty-one".