72709003 has 16 divisors (see below), whose sum is σ = 79706880. Its totient is φ = 66106656.

The previous prime is 72708997. The next prime is 72709019. The reversal of 72709003 is 30090727.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 72709003 - 2⁵ = 72708971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72709073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43876 + ... + 45502.

It is an arithmetic number, because the mean of its divisors is an integer number (4981680).

Almost surely, 2^72709003 is an apocalyptic number.

72709003 is a deficient number, since it is larger than the sum of its proper divisors (6997877).

72709003 is a wasteful number, since it uses less digits than its factorization.

72709003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746.

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 72709003 is about 8526.9574292358. The cubic root of 72709003 is about 417.3778489745.

The spelling of 72709003 in words is "seventy-two million, seven hundred nine thousand, three".