72265646 has 8 divisors (see below), whose sum is σ = 109925424. Its totient is φ = 35623840.

The previous prime is 72265643. The next prime is 72265703. The reversal of 72265646 is 64656227.

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 (72265643) 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, 254315 + ... + 254598.

It is an arithmetic number, because the mean of its divisors is an integer number (13740678).

Almost surely, 2^72265646 is an apocalyptic number.

72265646 is a deficient number, since it is larger than the sum of its proper divisors (37659778).

72265646 is a wasteful number, since it uses less digits than its factorization.

72265646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508986.

The product of its digits is 120960, while the sum is 38.

The square root of 72265646 is about 8500.9203031201. The cubic root of 72265646 is about 416.5277718026.

The spelling of 72265646 in words is "seventy-two million, two hundred sixty-five thousand, six hundred forty-six".