630846121 has 4 divisors (see below), whose sum is σ = 642748932. Its totient is φ = 618943312.

The previous prime is 630846107. The next prime is 630846133. The reversal of 630846121 is 121648036.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 294637225 + 336208896 = 17165^2 + 18336^2 .

It is a cyclic number.

It is not a de Polignac number, because 630846121 - 2¹³ = 630837929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630843121) 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, 5951326 + ... + 5951431.

It is an arithmetic number, because the mean of its divisors is an integer number (160687233).

Almost surely, 2^630846121 is an apocalyptic number.

It is an amenable number.

630846121 is a deficient number, since it is larger than the sum of its proper divisors (11902811).

630846121 is a wasteful number, since it uses less digits than its factorization.

630846121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11902810.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 630846121 is about 25116.6502742703. The cubic root of 630846121 is about 857.6454981798.

The spelling of 630846121 in words is "six hundred thirty million, eight hundred forty-six thousand, one hundred twenty-one".