712421636 has 6 divisors (see below), whose sum is σ = 1246737870. Its totient is φ = 356210816.

The previous prime is 712421621. The next prime is 712421639. The reversal of 712421636 is 636124217.

It can be written as a sum of positive squares in only one way, i.e., 712356100 + 65536 = 26690^2 + 256^2 .

It is not an unprimeable number, because it can be changed into a prime (712421639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 89052701 + ... + 89052708.

It is an arithmetic number, because the mean of its divisors is an integer number (207789645).

Almost surely, 2^712421636 is an apocalyptic number.

It is an amenable number.

712421636 is a deficient number, since it is larger than the sum of its proper divisors (534316234).

712421636 is a wasteful number, since it uses less digits than its factorization.

712421636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178105413 (or 178105411 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 712421636 is about 26691.2276975039. The cubic root of 712421636 is about 893.1252481234.

The spelling of 712421636 in words is "seven hundred twelve million, four hundred twenty-one thousand, six hundred thirty-six".