64243954 has 4 divisors (see below), whose sum is σ = 96365934. Its totient is φ = 32121976.

The previous prime is 64243943. The next prime is 64243967. The reversal of 64243954 is 45934246.

It is a happy number.

64243954 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45934246 = 2 ⋅22967123.

It can be written as a sum of positive squares in only one way, i.e., 59059225 + 5184729 = 7685^2 + 2277^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16060987 + ... + 16060990.

Almost surely, 2^64243954 is an apocalyptic number.

64243954 is a deficient number, since it is larger than the sum of its proper divisors (32121980).

64243954 is a wasteful number, since it uses less digits than its factorization.

64243954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32121979.

The product of its digits is 103680, while the sum is 37.

The square root of 64243954 is about 8015.2326229499. The cubic root of 64243954 is about 400.5075931006.

The spelling of 64243954 in words is "sixty-four million, two hundred forty-three thousand, nine hundred fifty-four".