720666348742 has 8 divisors (see below), whose sum is σ = 1084096944000. Its totient is φ = 359300700744.

The previous prime is 720666348679. The next prime is 720666348767. The reversal of 720666348742 is 247843666027.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516235942 + ... + 516237337.

It is an arithmetic number, because the mean of its divisors is an integer number (135512118000).

Almost surely, 2^720666348742 is an apocalyptic number.

720666348742 is a deficient number, since it is larger than the sum of its proper divisors (363430595258).

720666348742 is a wasteful number, since it uses less digits than its factorization.

720666348742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032473630.

The product of its (nonzero) digits is 16257024, while the sum is 55.

The spelling of 720666348742 in words is "seven hundred twenty billion, six hundred sixty-six million, three hundred forty-eight thousand, seven hundred forty-two".