716059921 has 4 divisors (see below), whose sum is σ = 726145344. Its totient is φ = 705974500.

The previous prime is 716059891. The next prime is 716059937. The reversal of 716059921 is 129950617.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 129950617 = 661 ⋅196597.

It is a cyclic number.

It is not a de Polignac number, because 716059921 - 2¹⁹ = 715535633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (716059961) 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, 5042605 + ... + 5042746.

It is an arithmetic number, because the mean of its divisors is an integer number (181536336).

Almost surely, 2^716059921 is an apocalyptic number.

716059921 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

716059921 is a deficient number, since it is larger than the sum of its proper divisors (10085423).

716059921 is a wasteful number, since it uses less digits than its factorization.

716059921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10085422.

The product of its (nonzero) digits is 34020, while the sum is 40.

The square root of 716059921 is about 26759.2959735491. The cubic root of 716059921 is about 894.6430423212.

It can be divided in two parts, 7160 and 59921, that added together give a square (67081 = 259²).

The spelling of 716059921 in words is "seven hundred sixteen million, fifty-nine thousand, nine hundred twenty-one".