64873722 has 16 divisors (see below), whose sum is σ = 129852000. Its totient is φ = 21607152.

The previous prime is 64873709. The next prime is 64873727. The reversal of 64873722 is 22737846.

It is a super-2 number, since 2×64873722² = 8417199612266568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64873727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5388 + ... + 12600.

It is an arithmetic number, because the mean of its divisors is an integer number (8115750).

Almost surely, 2^64873722 is an apocalyptic number.

64873722 is an abundant number, since it is smaller than the sum of its proper divisors (64978278).

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

64873722 is a wasteful number, since it uses less digits than its factorization.

64873722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8717.

The product of its digits is 112896, while the sum is 39.

The square root of 64873722 is about 8054.4225118875. The cubic root of 64873722 is about 401.8120331114.

The spelling of 64873722 in words is "sixty-four million, eight hundred seventy-three thousand, seven hundred twenty-two".