64279406 has 4 divisors (see below), whose sum is σ = 96419112. Its totient is φ = 32139702.

The previous prime is 64279403. The next prime is 64279427. The reversal of 64279406 is 60497246.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64279406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64279403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16069850 + ... + 16069853.

It is an arithmetic number, because the mean of its divisors is an integer number (24104778).

Almost surely, 2^64279406 is an apocalyptic number.

64279406 is a deficient number, since it is larger than the sum of its proper divisors (32139706).

64279406 is a wasteful number, since it uses less digits than its factorization.

64279406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32139705.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 64279406 is about 8017.4438569908. The cubic root of 64279406 is about 400.5812507930.

The spelling of 64279406 in words is "sixty-four million, two hundred seventy-nine thousand, four hundred six".