135697044 has 108 divisors (see below), whose sum is σ = 383250336. Its totient is φ = 36604800.

The previous prime is 135697039. The next prime is 135697049. The reversal of 135697044 is 440796531.

135697044 is nontrivially palindromic in base 9.

It is an interprime number because it is at equal distance from previous prime (135697039) and next prime (135697049).

It is a junction number, because it is equal to n+sod(n) for n = 135696993 and 135697011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135697049) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3309664 + ... + 3309704.

Almost surely, 2^135697044 is an apocalyptic number.

135697044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135697044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191625168).

135697044 is an abundant number, since it is smaller than the sum of its proper divisors (247553292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135697044 is a wasteful number, since it uses less digits than its factorization.

135697044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 135697044 is about 11648.9074165777. The cubic root of 135697044 is about 513.8741787544.

The spelling of 135697044 in words is "one hundred thirty-five million, six hundred ninety-seven thousand, forty-four".