612631930 has 16 divisors (see below), whose sum is σ = 1103241384. Its totient is φ = 244940800.

The previous prime is 612631883. The next prime is 612631939. The reversal of 612631930 is 39136216.

It can be written as a sum of positive squares in 4 ways, for example, as 520798041 + 91833889 = 22821^2 + 9583^2 .

It is a junction number, because it is equal to n+sod(n) for n = 612631892 and 612631901.

It is not an unprimeable number, because it can be changed into a prime (612631939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11130 + ... + 36730.

Almost surely, 2^612631930 is an apocalyptic number.

612631930 is a deficient number, since it is larger than the sum of its proper divisors (490609454).

612631930 is a wasteful number, since it uses less digits than its factorization.

612631930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28001.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 612631930 is about 24751.4025865202. The cubic root of 612631930 is about 849.3105967112.

The spelling of 612631930 in words is "six hundred twelve million, six hundred thirty-one thousand, nine hundred thirty".