30145697 has 4 divisors (see below), whose sum is σ = 30159636. Its totient is φ = 30131760.

The previous prime is 30145693. The next prime is 30145699. The reversal of 30145697 is 79654103.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15713296 + 14432401 = 3964^2 + 3799^2 .

It is a cyclic number.

It is not a de Polignac number, because 30145697 - 2² = 30145693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30145693) 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, 2954 + ... + 8307.

It is an arithmetic number, because the mean of its divisors is an integer number (7539909).

Almost surely, 2^30145697 is an apocalyptic number.

It is an amenable number.

30145697 is a deficient number, since it is larger than the sum of its proper divisors (13939).

30145697 is a wasteful number, since it uses less digits than its factorization.

30145697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13938.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 30145697 is about 5490.5097213282. The cubic root of 30145697 is about 311.2254545355.

The spelling of 30145697 in words is "thirty million, one hundred forty-five thousand, six hundred ninety-seven".