30699245 has 4 divisors (see below), whose sum is σ = 36839100. Its totient is φ = 24559392.

The previous prime is 30699241. The next prime is 30699247. The reversal of 30699245 is 54299603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54299603 = 1459 ⋅37217.

It can be written as a sum of positive squares in 2 ways, for example, as 7678441 + 23020804 = 2771^2 + 4798^2 .

It is a cyclic number.

It is not a de Polignac number, because 30699245 - 2² = 30699241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30699199 and 30699208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30699241) 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, 3069920 + ... + 3069929.

It is an arithmetic number, because the mean of its divisors is an integer number (9209775).

Almost surely, 2^30699245 is an apocalyptic number.

It is an amenable number.

30699245 is a deficient number, since it is larger than the sum of its proper divisors (6139855).

30699245 is an equidigital number, since it uses as much as digits as its factorization.

30699245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6139854.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 30699245 is about 5540.6899389877. The cubic root of 30699245 is about 313.1188632176.

The spelling of 30699245 in words is "thirty million, six hundred ninety-nine thousand, two hundred forty-five".