72403703 has 2 divisors, whose sum is σ = 72403704. Its totient is φ = 72403702.

The previous prime is 72403687. The next prime is 72403739. The reversal of 72403703 is 30730427.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72403703 - 2⁴ = 72403687 is a prime.

It is a super-2 number, since 2×72403703² = 10484592416224418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72403753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36201851 + 36201852.

It is an arithmetic number, because the mean of its divisors is an integer number (36201852).

Almost surely, 2^72403703 is an apocalyptic number.

72403703 is a deficient number, since it is larger than the sum of its proper divisors (1).

72403703 is an equidigital number, since it uses as much as digits as its factorization.

72403703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 72403703 is about 8509.0365494573. The cubic root of 72403703 is about 416.7928493210.

The spelling of 72403703 in words is "seventy-two million, four hundred three thousand, seven hundred three".