135698601 has 4 divisors (see below), whose sum is σ = 180931472. Its totient is φ = 90465732.

The previous prime is 135698599. The next prime is 135698639. The reversal of 135698601 is 106896531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 135698601 - 2¹ = 135698599 is a prime.

It is a super-2 number, since 2×135698601² = 36828220626714402, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135698601.

It is not an unprimeable number, because it can be changed into a prime (135698671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22616431 + ... + 22616436.

It is an arithmetic number, because the mean of its divisors is an integer number (45232868).

Almost surely, 2^135698601 is an apocalyptic number.

It is an amenable number.

135698601 is a deficient number, since it is larger than the sum of its proper divisors (45232871).

135698601 is an equidigital number, since it uses as much as digits as its factorization.

135698601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45232870.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 135698601 is about 11648.9742466880. The cubic root of 135698601 is about 513.8761441596.

The spelling of 135698601 in words is "one hundred thirty-five million, six hundred ninety-eight thousand, six hundred one".