30697645 has 8 divisors (see below), whose sum is σ = 40186080. Its totient is φ = 22325520.

The previous prime is 30697621. The next prime is 30697649. The reversal of 30697645 is 54679603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30697645 - 2⁹ = 30697133 is a prime.

It is a super-3 number, since 3×30697645³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30697598 and 30697607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30697649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279015 + ... + 279124.

It is an arithmetic number, because the mean of its divisors is an integer number (5023260).

Almost surely, 2^30697645 is an apocalyptic number.

It is an amenable number.

30697645 is a deficient number, since it is larger than the sum of its proper divisors (9488435).

30697645 is a wasteful number, since it uses less digits than its factorization.

30697645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558155.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 30697645 is about 5540.5455507558. The cubic root of 30697645 is about 313.1134233565.

The spelling of 30697645 in words is "thirty million, six hundred ninety-seven thousand, six hundred forty-five".