72220654 has 8 divisors (see below), whose sum is σ = 118179288. Its totient is φ = 32827560.

The previous prime is 72220649. The next prime is 72220657. The reversal of 72220654 is 45602227.

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 (72220657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1641357 + ... + 1641400.

It is an arithmetic number, because the mean of its divisors is an integer number (14772411).

Almost surely, 2^72220654 is an apocalyptic number.

72220654 is a deficient number, since it is larger than the sum of its proper divisors (45958634).

72220654 is a wasteful number, since it uses less digits than its factorization.

72220654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3282770.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 72220654 is about 8498.2735893827. The cubic root of 72220654 is about 416.4413115960.

The spelling of 72220654 in words is "seventy-two million, two hundred twenty thousand, six hundred fifty-four".