630877261 has 8 divisors (see below), whose sum is σ = 721206144. Its totient is φ = 540599280.

The previous prime is 630877241. The next prime is 630877309. The reversal of 630877261 is 162778036.

630877261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 630877261 - 2⁷ = 630877133 is a prime.

It is a super-2 number, since 2×630877261² = 796012236893724242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630877241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19176 + ... + 40366.

It is an arithmetic number, because the mean of its divisors is an integer number (90150768).

Almost surely, 2^630877261 is an apocalyptic number.

It is an amenable number.

630877261 is a deficient number, since it is larger than the sum of its proper divisors (90328883).

630877261 is a wasteful number, since it uses less digits than its factorization.

630877261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25451.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 630877261 is about 25117.2701741252. The cubic root of 630877261 is about 857.6596097253.

The spelling of 630877261 in words is "six hundred thirty million, eight hundred seventy-seven thousand, two hundred sixty-one".