712661387 has 8 divisors (see below), whose sum is σ = 739353600. Its totient is φ = 686200680.

The previous prime is 712661381. The next prime is 712661407. The reversal of 712661387 is 783166217.

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 712661387 - 2¹⁰ = 712660363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (712661381) 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, 51593 + ... + 63930.

It is an arithmetic number, because the mean of its divisors is an integer number (92419200).

Almost surely, 2^712661387 is an apocalyptic number.

712661387 is a deficient number, since it is larger than the sum of its proper divisors (26692213).

712661387 is a wasteful number, since it uses less digits than its factorization.

712661387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115753.

The product of its digits is 84672, while the sum is 41.

The square root of 712661387 is about 26695.7185143985. The cubic root of 712661387 is about 893.2254245943.

The spelling of 712661387 in words is "seven hundred twelve million, six hundred sixty-one thousand, three hundred eighty-seven".