135644464 has 10 divisors (see below), whose sum is σ = 262811180. Its totient is φ = 67822224.

The previous prime is 135644461. The next prime is 135644473. The reversal of 135644464 is 464446531.

It is a super-2 number, since 2×135644464² = 36798841227694592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135644461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4238874 + ... + 4238905.

It is an arithmetic number, because the mean of its divisors is an integer number (26281118).

Almost surely, 2^135644464 is an apocalyptic number.

It is an amenable number.

135644464 is a deficient number, since it is larger than the sum of its proper divisors (127166716).

135644464 is an equidigital number, since it uses as much as digits as its factorization.

135644464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8477787 (or 8477781 counting only the distinct ones).

The product of its digits is 138240, while the sum is 37.

The square root of 135644464 is about 11646.6503338943. The cubic root of 135644464 is about 513.8077980529.

The spelling of 135644464 in words is "one hundred thirty-five million, six hundred forty-four thousand, four hundred sixty-four".