72000069 has 16 divisors (see below), whose sum is σ = 100945920. Its totient is φ = 45581760.

The previous prime is 72000053. The next prime is 72000091. The reversal of 72000069 is 96000027.

It is not a de Polignac number, because 72000069 - 2⁴ = 72000053 is a prime.

It is a super-2 number, since 2×72000069² = 10368019872009522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72000169) 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, 1477 + ... + 12090.

It is an arithmetic number, because the mean of its divisors is an integer number (6309120).

Almost surely, 2^72000069 is an apocalyptic number.

It is an amenable number.

72000069 is a deficient number, since it is larger than the sum of its proper divisors (28945851).

72000069 is a wasteful number, since it uses less digits than its factorization.

72000069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13660.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 72000069 is about 8485.2854401016. The cubic root of 72000069 is about 416.0168975046.

The spelling of 72000069 in words is "seventy-two million, sixty-nine", and thus it is an aban number and an uban number.