64135954 has 4 divisors (see below), whose sum is σ = 96203934. Its totient is φ = 32067976.

The previous prime is 64135943. The next prime is 64135957. The reversal of 64135954 is 45953146.

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

It can be written as a sum of positive squares in only one way, i.e., 56655729 + 7480225 = 7527^2 + 2735^2 .

It is a super-2 number, since 2×64135954² = 8226841190980232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64135957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16033987 + ... + 16033990.

Almost surely, 2^64135954 is an apocalyptic number.

64135954 is a deficient number, since it is larger than the sum of its proper divisors (32067980).

64135954 is a wasteful number, since it uses less digits than its factorization.

64135954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32067979.

The product of its digits is 64800, while the sum is 37.

The square root of 64135954 is about 8008.4926172158. The cubic root of 64135954 is about 400.2830371777.

The spelling of 64135954 in words is "sixty-four million, one hundred thirty-five thousand, nine hundred fifty-four".