736675981 has 4 divisors (see below), whose sum is σ = 736952832. Its totient is φ = 736399132.

The previous prime is 736675967. The next prime is 736675997. The reversal of 736675981 is 189576637.

736675981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 189576637 = 43 ⋅4408759.

It is a cyclic number.

It is not a de Polignac number, because 736675981 - 2⁵ = 736675949 is a prime.

It is a super-2 number, since 2×736675981² = 1085383001964624722, 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 (736675931) 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, 134395 + ... + 139768.

It is an arithmetic number, because the mean of its divisors is an integer number (184238208).

Almost surely, 2^736675981 is an apocalyptic number.

It is an amenable number.

736675981 is a deficient number, since it is larger than the sum of its proper divisors (276851).

736675981 is a wasteful number, since it uses less digits than its factorization.

736675981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276850.

The product of its digits is 1905120, while the sum is 52.

The square root of 736675981 is about 27141.7755683006. The cubic root of 736675981 is about 903.1478173551.

The spelling of 736675981 in words is "seven hundred thirty-six million, six hundred seventy-five thousand, nine hundred eighty-one".