30620641 has 4 divisors (see below), whose sum is σ = 31272192. Its totient is φ = 29969092.

The previous prime is 30620633. The next prime is 30620651. The reversal of 30620641 is 14602603.

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.

It is a cyclic number.

It is not a de Polignac number, because 30620641 - 2³ = 30620633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30620651) 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, 325705 + ... + 325798.

It is an arithmetic number, because the mean of its divisors is an integer number (7818048).

Almost surely, 2^30620641 is an apocalyptic number.

It is an amenable number.

30620641 is a deficient number, since it is larger than the sum of its proper divisors (651551).

30620641 is an equidigital number, since it uses as much as digits as its factorization.

30620641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651550.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 30620641 is about 5533.5920521845. The cubic root of 30620641 is about 312.8513926728.

The spelling of 30620641 in words is "thirty million, six hundred twenty thousand, six hundred forty-one".