72190069 has 4 divisors (see below), whose sum is σ = 82502944. Its totient is φ = 61877196.

The previous prime is 72190049. The next prime is 72190091. The reversal of 72190069 is 96009127.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72190069 - 2⁷ = 72189941 is a prime.

It is a super-2 number, since 2×72190069² = 10422812124449522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72190009) 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, 5156427 + ... + 5156440.

It is an arithmetic number, because the mean of its divisors is an integer number (20625736).

Almost surely, 2^72190069 is an apocalyptic number.

It is an amenable number.

72190069 is a deficient number, since it is larger than the sum of its proper divisors (10312875).

72190069 is a wasteful number, since it uses less digits than its factorization.

72190069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10312874.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 72190069 is about 8496.4739156900. The cubic root of 72190069 is about 416.3825165227.

The spelling of 72190069 in words is "seventy-two million, one hundred ninety thousand, sixty-nine".