630621151 has 4 divisors (see below), whose sum is σ = 630680904. Its totient is φ = 630561400.

The previous prime is 630621139. The next prime is 630621169. The reversal of 630621151 is 151126036.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 630621151 - 2⁵ = 630621119 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 (630621181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9340 + ... + 36721.

It is an arithmetic number, because the mean of its divisors is an integer number (157670226).

Almost surely, 2^630621151 is an apocalyptic number.

630621151 is a deficient number, since it is larger than the sum of its proper divisors (59753).

630621151 is a wasteful number, since it uses less digits than its factorization.

630621151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59752.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 630621151 is about 25112.1713716676. The cubic root of 630621151 is about 857.5435359412.

Adding to 630621151 its reverse (151126036), we get a palindrome (781747187).

The spelling of 630621151 in words is "six hundred thirty million, six hundred twenty-one thousand, one hundred fifty-one".