749235661056 has 135 divisors (see below), whose sum is σ = 2234456901523. Its totient is φ = 249703672320.

The previous prime is 749235660949. The next prime is 749235661067. The reversal of 749235661056 is 650166532947.

The square root of 749235661056 is 865584.

It is a perfect power (a square), and thus also a powerful number.

749235661056 is a `hidden beast` number, since 7 + 4 + 9 + 23 + 566 + 1 + 0 + 56 = 666.

It is a super-2 number, since 2×749235661056² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 749235660993 and 749235661011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 124641091 + ... + 124647101.

Almost surely, 2^749235661056 is an apocalyptic number.

749235661056 is the 865584-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 749235661056

749235661056 is an abundant number, since it is smaller than the sum of its proper divisors (1485221240467).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

749235661056 is an frugal number, since it uses more digits than its factorization.

749235661056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12050 (or 6016 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 54.

The spelling of 749235661056 in words is "seven hundred forty-nine billion, two hundred thirty-five million, six hundred sixty-one thousand, fifty-six".