157620065 has 4 divisors (see below), whose sum is σ = 189144084. Its totient is φ = 126096048.

The previous prime is 157620059. The next prime is 157620079. The reversal of 157620065 is 560026751.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 82156096 + 75463969 = 9064^2 + 8687^2 .

It is a cyclic number.

It is not a de Polignac number, because 157620065 - 2¹⁴ = 157603681 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 15762002 + ... + 15762011.

It is an arithmetic number, because the mean of its divisors is an integer number (47286021).

Almost surely, 2^157620065 is an apocalyptic number.

It is an amenable number.

157620065 is a deficient number, since it is larger than the sum of its proper divisors (31524019).

157620065 is an equidigital number, since it uses as much as digits as its factorization.

157620065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31524018.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 157620065 is about 12554.6829908206. The cubic root of 157620065 is about 540.1783418712.

The spelling of 157620065 in words is "one hundred fifty-seven million, six hundred twenty thousand, sixty-five".