746918981 has 4 divisors (see below), whose sum is σ = 749059500. Its totient is φ = 744778464.

The previous prime is 746918927. The next prime is 746918989. The reversal of 746918981 is 189819647.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 448804225 + 298114756 = 21185^2 + 17266^2 .

It is a cyclic number.

It is not a de Polignac number, because 746918981 - 2⁶ = 746918917 is a prime.

It is a super-2 number, since 2×746918981² = 1115775928356156722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (746918989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1069736 + ... + 1070433.

It is an arithmetic number, because the mean of its divisors is an integer number (187264875).

Almost surely, 2^746918981 is an apocalyptic number.

It is an amenable number.

746918981 is a deficient number, since it is larger than the sum of its proper divisors (2140519).

746918981 is a wasteful number, since it uses less digits than its factorization.

746918981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140518.

The product of its digits is 870912, while the sum is 53.

The square root of 746918981 is about 27329.8185321454. The cubic root of 746918981 is about 907.3144593072.

The spelling of 746918981 in words is "seven hundred forty-six million, nine hundred eighteen thousand, nine hundred eighty-one".