723490937661 has 8 divisors (see below), whose sum is σ = 964817473120. Its totient is φ = 482245846992.

The previous prime is 723490937573. The next prime is 723490937731. The reversal of 723490937661 is 166739094327.

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

It is not a de Polignac number, because 723490937661 - 2³⁵ = 689131199293 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 (723490937161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20340466 + ... + 20376003.

It is an arithmetic number, because the mean of its divisors is an integer number (120602184140).

Almost surely, 2^723490937661 is an apocalyptic number.

It is an amenable number.

723490937661 is a deficient number, since it is larger than the sum of its proper divisors (241326535459).

723490937661 is a wasteful number, since it uses less digits than its factorization.

723490937661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40722395.

The product of its (nonzero) digits is 10287648, while the sum is 57.

The spelling of 723490937661 in words is "seven hundred twenty-three billion, four hundred ninety million, nine hundred thirty-seven thousand, six hundred sixty-one".