630357261 has 16 divisors (see below), whose sum is σ = 855533568. Its totient is φ = 412776000.

The previous prime is 630357257. The next prime is 630357269. The reversal of 630357261 is 162753036.

630357261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 630357261 - 2² = 630357257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630357269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30291 + ... + 46671.

It is an arithmetic number, because the mean of its divisors is an integer number (53470848).

Almost surely, 2^630357261 is an apocalyptic number.

It is an amenable number.

630357261 is a deficient number, since it is larger than the sum of its proper divisors (225176307).

630357261 is a wasteful number, since it uses less digits than its factorization.

630357261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16612.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 630357261 is about 25106.9165968265. The cubic root of 630357261 is about 857.4239032393.

The spelling of 630357261 in words is "six hundred thirty million, three hundred fifty-seven thousand, two hundred sixty-one".