72603701 has 4 divisors (see below), whose sum is σ = 73269900. Its totient is φ = 71937504.

The previous prime is 72603697. The next prime is 72603703. The reversal of 72603701 is 10730627.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59830225 + 12773476 = 7735^2 + 3574^2 .

It is a cyclic number.

It is not a de Polignac number, because 72603701 - 2² = 72603697 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 (72603703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332936 + ... + 333153.

It is an arithmetic number, because the mean of its divisors is an integer number (18317475).

Almost surely, 2^72603701 is an apocalyptic number.

It is an amenable number.

72603701 is a deficient number, since it is larger than the sum of its proper divisors (666199).

72603701 is a wasteful number, since it uses less digits than its factorization.

72603701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666198.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 72603701 is about 8520.7805393638. The cubic root of 72603701 is about 417.1762601983.

The spelling of 72603701 in words is "seventy-two million, six hundred three thousand, seven hundred one".