135864907 has 4 divisors (see below), whose sum is σ = 139024600. Its totient is φ = 132705216.

The previous prime is 135864889. The next prime is 135864919. The reversal of 135864907 is 709468531.

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

It is a cyclic number.

It is not a de Polignac number, because 135864907 - 2⁷ = 135864779 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 3159649 = 135864907 / (1 + 3 + 5 + 8 + 6 + 4 + 9 + 0 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135864977) 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, 1579782 + ... + 1579867.

It is an arithmetic number, because the mean of its divisors is an integer number (34756150).

Almost surely, 2^135864907 is an apocalyptic number.

135864907 is a deficient number, since it is larger than the sum of its proper divisors (3159693).

135864907 is an equidigital number, since it uses as much as digits as its factorization.

135864907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3159692.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 135864907 is about 11656.1102860260. The cubic root of 135864907 is about 514.0859861598.

The spelling of 135864907 in words is "one hundred thirty-five million, eight hundred sixty-four thousand, nine hundred seven".