366774981 has 16 divisors (see below), whose sum is σ = 515555328. Its totient is φ = 231591600.

The previous prime is 366774953. The next prime is 366775001. The reversal of 366774981 is 189477663.

It is not a de Polignac number, because 366774981 - 2¹⁵ = 366742213 is a prime.

It is a super-2 number, since 2×366774981² = 269047773375100722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (366774901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37585 + ... + 46326.

It is an arithmetic number, because the mean of its divisors is an integer number (32222208).

Almost surely, 2^366774981 is an apocalyptic number.

366774981 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

366774981 is a deficient number, since it is larger than the sum of its proper divisors (148780347).

366774981 is a wasteful number, since it uses less digits than its factorization.

366774981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83992.

The product of its digits is 1524096, while the sum is 51.

The square root of 366774981 is about 19151.3702120762. The cubic root of 366774981 is about 715.8135268847.

The spelling of 366774981 in words is "three hundred sixty-six million, seven hundred seventy-four thousand, nine hundred eighty-one".