136287497 has 8 divisors (see below), whose sum is σ = 137400840. Its totient is φ = 135178240.

The previous prime is 136287491. The next prime is 136287509. The reversal of 136287497 is 794782631.

It can be written as a sum of positive squares in 4 ways, for example, as 118613881 + 17673616 = 10891^2 + 4204^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136287497 - 2¹² = 136283401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136287491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110279 + ... + 111507.

It is an arithmetic number, because the mean of its divisors is an integer number (17175105).

Almost surely, 2^136287497 is an apocalyptic number.

It is an amenable number.

136287497 is a deficient number, since it is larger than the sum of its proper divisors (1113343).

136287497 is a wasteful number, since it uses less digits than its factorization.

136287497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043.

The product of its digits is 508032, while the sum is 47.

The square root of 136287497 is about 11674.2236144422. The cubic root of 136287497 is about 514.6184335494.

The spelling of 136287497 in words is "one hundred thirty-six million, two hundred eighty-seven thousand, four hundred ninety-seven".