72447701 has 8 divisors (see below), whose sum is σ = 73013184. Its totient is φ = 71884960.

The previous prime is 72447689. The next prime is 72447707. The reversal of 72447701 is 10774427.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72447701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72447707) 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, 97136 + ... + 97878.

It is an arithmetic number, because the mean of its divisors is an integer number (9126648).

Almost surely, 2^72447701 is an apocalyptic number.

It is an amenable number.

72447701 is a deficient number, since it is larger than the sum of its proper divisors (565483).

72447701 is a wasteful number, since it uses less digits than its factorization.

72447701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371.

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 72447701 is about 8511.6215258904. The cubic root of 72447701 is about 416.8772572437.

The spelling of 72447701 in words is "seventy-two million, four hundred forty-seven thousand, seven hundred one".