72066622 has 8 divisors (see below), whose sum is σ = 109580976. Its totient is φ = 35539632.

The previous prime is 72066619. The next prime is 72066629. The reversal of 72066622 is 22666027.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72066629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246658 + ... + 246949.

It is an arithmetic number, because the mean of its divisors is an integer number (13697622).

Almost surely, 2^72066622 is an apocalyptic number.

72066622 is a deficient number, since it is larger than the sum of its proper divisors (37514354).

72066622 is a wasteful number, since it uses less digits than its factorization.

72066622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493682.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 72066622 is about 8489.2062055295. The cubic root of 72066622 is about 416.1450392619.

The spelling of 72066622 in words is "seventy-two million, sixty-six thousand, six hundred twenty-two".