36467721 has 12 divisors (see below), whose sum is σ = 52772148. Its totient is φ = 24267264.

The previous prime is 36467713. The next prime is 36467729. The reversal of 36467721 is 12776463.

36467721 is a `hidden beast` number, since 3 + 646 + 7 + 7 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (36467713) and next prime (36467729).

It can be written as a sum of positive squares in 2 ways, for example, as 12702096 + 23765625 = 3564^2 + 4875^2 .

It is not a de Polignac number, because 36467721 - 2³ = 36467713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (36467729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1921 + ... + 8753.

It is an arithmetic number, because the mean of its divisors is an integer number (4397679).

Almost surely, 2^36467721 is an apocalyptic number.

It is an amenable number.

36467721 is a deficient number, since it is larger than the sum of its proper divisors (16304427).

36467721 is a wasteful number, since it uses less digits than its factorization.

36467721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7432 (or 7429 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 36467721 is about 6038.8509668645. The cubic root of 36467721 is about 331.6165584539.

The spelling of 36467721 in words is "thirty-six million, four hundred sixty-seven thousand, seven hundred twenty-one".