36706421 has 2 divisors, whose sum is σ = 36706422. Its totient is φ = 36706420.

The previous prime is 36706403. The next prime is 36706447. The reversal of 36706421 is 12460763.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35832196 + 874225 = 5986^2 + 935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36706421 is a prime.

It is a super-2 number, since 2×36706421² = 2694722685258482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36706471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18353210 + 18353211.

It is an arithmetic number, because the mean of its divisors is an integer number (18353211).

Almost surely, 2^36706421 is an apocalyptic number.

It is an amenable number.

36706421 is a deficient number, since it is larger than the sum of its proper divisors (1).

36706421 is an equidigital number, since it uses as much as digits as its factorization.

36706421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 36706421 is about 6058.5824249572. The cubic root of 36706421 is about 332.3385192104.

The spelling of 36706421 in words is "thirty-six million, seven hundred six thousand, four hundred twenty-one".