72074969 has 4 divisors (see below), whose sum is σ = 74400000. Its totient is φ = 69749940.

The previous prime is 72074963. The next prime is 72074983. The reversal of 72074969 is 96947027.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96947027 = 283 ⋅342569.

It is a cyclic number.

It is not a de Polignac number, because 72074969 - 2²⁰ = 71026393 is a prime.

It is a super-2 number, since 2×72074969² = 10389602312701922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72074963) 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, 1162469 + ... + 1162530.

It is an arithmetic number, because the mean of its divisors is an integer number (18600000).

Almost surely, 2^72074969 is an apocalyptic number.

It is an amenable number.

72074969 is a deficient number, since it is larger than the sum of its proper divisors (2325031).

72074969 is a wasteful number, since it uses less digits than its factorization.

72074969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2325030.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 72074969 is about 8489.6978155880. The cubic root of 72074969 is about 416.1611050838.

The spelling of 72074969 in words is "seventy-two million, seventy-four thousand, nine hundred sixty-nine".