30722669 has 4 divisors (see below), whose sum is σ = 31302396. Its totient is φ = 30142944.

The previous prime is 30722663. The next prime is 30722701. The reversal of 30722669 is 96622703.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96622703 = 4241 ⋅22783.

It can be written as a sum of positive squares in 2 ways, for example, as 8773444 + 21949225 = 2962^2 + 4685^2 .

It is a cyclic number.

It is not a de Polignac number, because 30722669 - 2²⁰ = 29674093 is a prime.

It is a super-2 number, since 2×30722669² = 1887764780967122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30722663) 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, 289784 + ... + 289889.

It is an arithmetic number, because the mean of its divisors is an integer number (7825599).

Almost surely, 2^30722669 is an apocalyptic number.

It is an amenable number.

30722669 is a deficient number, since it is larger than the sum of its proper divisors (579727).

30722669 is an equidigital number, since it uses as much as digits as its factorization.

30722669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579726.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 30722669 is about 5542.8033520954. The cubic root of 30722669 is about 313.1984811539.

The spelling of 30722669 in words is "thirty million, seven hundred twenty-two thousand, six hundred sixty-nine".