157345687 has 2 divisors, whose sum is σ = 157345688. Its totient is φ = 157345686.

The previous prime is 157345667. The next prime is 157345703. The reversal of 157345687 is 786543751.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157345687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157345667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78672843 + 78672844.

It is an arithmetic number, because the mean of its divisors is an integer number (78672844).

Almost surely, 2^157345687 is an apocalyptic number.

157345687 is a deficient number, since it is larger than the sum of its proper divisors (1).

157345687 is an equidigital number, since it uses as much as digits as its factorization.

157345687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705600, while the sum is 46.

The square root of 157345687 is about 12543.7509142999. The cubic root of 157345687 is about 539.8647203424.

The spelling of 157345687 in words is "one hundred fifty-seven million, three hundred forty-five thousand, six hundred eighty-seven".