64473726 has 16 divisors (see below), whose sum is σ = 135734400. Its totient is φ = 20360088.

The previous prime is 64473697. The next prime is 64473733. The reversal of 64473726 is 62737446.

It is a super-2 number, since 2×64473726² = 8313722688646152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282666 + ... + 282893.

It is an arithmetic number, because the mean of its divisors is an integer number (8483400).

Almost surely, 2^64473726 is an apocalyptic number.

64473726 is an abundant number, since it is smaller than the sum of its proper divisors (71260674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64473726 is a wasteful number, since it uses less digits than its factorization.

64473726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565583.

The product of its digits is 169344, while the sum is 39.

The square root of 64473726 is about 8029.5532876991. The cubic root of 64473726 is about 400.9845040581.

The spelling of 64473726 in words is "sixty-four million, four hundred seventy-three thousand, seven hundred twenty-six".