64643134 has 8 divisors (see below), whose sum is σ = 97175520. Its totient is φ = 32251296.

The previous prime is 64643099. The next prime is 64643171. The reversal of 64643134 is 43134646.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 64643096 and 64643105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33979 + ... + 35830.

It is an arithmetic number, because the mean of its divisors is an integer number (12146940).

Almost surely, 2^64643134 is an apocalyptic number.

64643134 is a deficient number, since it is larger than the sum of its proper divisors (32532386).

64643134 is a wasteful number, since it uses less digits than its factorization.

64643134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70274.

The product of its digits is 20736, while the sum is 31.

The square root of 64643134 is about 8040.0953974440. The cubic root of 64643134 is about 401.3353993104.

The spelling of 64643134 in words is "sixty-four million, six hundred forty-three thousand, one hundred thirty-four".