734290647661 has 4 divisors (see below), whose sum is σ = 746328199324. Its totient is φ = 722253096000.

The previous prime is 734290647647. The next prime is 734290647731. The reversal of 734290647661 is 166746092437.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166746092437 = 140983 ⋅1182739.

It can be written as a sum of positive squares in 2 ways, for example, as 6372828900 + 727917818761 = 79830^2 + 853181^2 .

It is a cyclic number.

It is not a de Polignac number, because 734290647661 - 2⁷ = 734290647533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (734290447661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6018775740 + ... + 6018775861.

It is an arithmetic number, because the mean of its divisors is an integer number (186582049831).

Almost surely, 2^734290647661 is an apocalyptic number.

It is an amenable number.

734290647661 is a deficient number, since it is larger than the sum of its proper divisors (12037551663).

734290647661 is a wasteful number, since it uses less digits than its factorization.

734290647661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12037551662.

The product of its (nonzero) digits is 9144576, while the sum is 55.

The spelling of 734290647661 in words is "seven hundred thirty-four billion, two hundred ninety million, six hundred forty-seven thousand, six hundred sixty-one".