712121707 has 8 divisors (see below), whose sum is σ = 780805872. Its totient is φ = 644095200.

The previous prime is 712121629. The next prime is 712121713. The reversal of 712121707 is 707121217.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-712121707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (712121807) 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, 162144 + ... + 166477.

It is an arithmetic number, because the mean of its divisors is an integer number (97600734).

Almost surely, 2^712121707 is an apocalyptic number.

712121707 is a deficient number, since it is larger than the sum of its proper divisors (68684165).

712121707 is a wasteful number, since it uses less digits than its factorization.

712121707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328829.

The product of its (nonzero) digits is 1372, while the sum is 28.

The square root of 712121707 is about 26685.6086121340. The cubic root of 712121707 is about 892.9998955001. Note that the first 3 decimals are identical.

The spelling of 712121707 in words is "seven hundred twelve million, one hundred twenty-one thousand, seven hundred seven".