630154247 has 4 divisors (see below), whose sum is σ = 663320280. Its totient is φ = 596988216.

The previous prime is 630154219. The next prime is 630154271. The reversal of 630154247 is 742451036.

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

It is a cyclic number.

It is not a de Polignac number, because 630154247 - 2⁶ = 630154183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630154277) 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, 16582988 + ... + 16583025.

It is an arithmetic number, because the mean of its divisors is an integer number (165830070).

Almost surely, 2^630154247 is an apocalyptic number.

630154247 is a deficient number, since it is larger than the sum of its proper divisors (33166033).

630154247 is a wasteful number, since it uses less digits than its factorization.

630154247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33166032.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 630154247 is about 25102.8732817580. The cubic root of 630154247 is about 857.3318455247.

The spelling of 630154247 in words is "six hundred thirty million, one hundred fifty-four thousand, two hundred forty-seven".