72273707 has 4 divisors (see below), whose sum is σ = 78844056. Its totient is φ = 65703360.

The previous prime is 72273697. The next prime is 72273709. The reversal of 72273707 is 70737227.

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

It is a cyclic number.

It is not a de Polignac number, because 72273707 - 2²⁴ = 55496491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72273709) 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, 3285158 + ... + 3285179.

It is an arithmetic number, because the mean of its divisors is an integer number (19711014).

Almost surely, 2^72273707 is an apocalyptic number.

72273707 is a deficient number, since it is larger than the sum of its proper divisors (6570349).

72273707 is a wasteful number, since it uses less digits than its factorization.

72273707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6570348.

The product of its (nonzero) digits is 28812, while the sum is 35.

The square root of 72273707 is about 8501.3944150357. The cubic root of 72273707 is about 416.5432586705.

The spelling of 72273707 in words is "seventy-two million, two hundred seventy-three thousand, seven hundred seven".