151720065 has 24 divisors (see below), whose sum is σ = 300550848. Its totient is φ = 69357600.

The previous prime is 151720033. The next prime is 151720069. The reversal of 151720065 is 560027151.

It is not a de Polignac number, because 151720065 - 2⁵ = 151720033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (151720069) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240511 + ... + 241140.

It is an arithmetic number, because the mean of its divisors is an integer number (12522952).

Almost surely, 2^151720065 is an apocalyptic number.

151720065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

151720065 is a deficient number, since it is larger than the sum of its proper divisors (148830783).

151720065 is a wasteful number, since it uses less digits than its factorization.

151720065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481669 (or 481666 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 151720065 is about 12317.4699106594. The cubic root of 151720065 is about 533.3525060382.

The spelling of 151720065 in words is "one hundred fifty-one million, seven hundred twenty thousand, sixty-five".