133696641 has 16 divisors (see below), whose sum is σ = 198596160. Its totient is φ = 79437120.

The previous prime is 133696639. The next prime is 133696643. The reversal of 133696641 is 146696331.

It is an interprime number because it is at equal distance from previous prime (133696639) and next prime (133696643).

It is not a de Polignac number, because 133696641 - 2¹ = 133696639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 133696641.

It is not an unprimeable number, because it can be changed into a prime (133696643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57975 + ... + 60236.

It is an arithmetic number, because the mean of its divisors is an integer number (12412260).

Almost surely, 2^133696641 is an apocalyptic number.

It is an amenable number.

133696641 is a deficient number, since it is larger than the sum of its proper divisors (64899519).

133696641 is a wasteful number, since it uses less digits than its factorization.

133696641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118256.

The product of its digits is 69984, while the sum is 39.

The square root of 133696641 is about 11562.7263653517. The cubic root of 133696641 is about 511.3365442728.

The spelling of 133696641 in words is "one hundred thirty-three million, six hundred ninety-six thousand, six hundred forty-one".