36622021 has 4 divisors (see below), whose sum is σ = 37222444. Its totient is φ = 36021600.

The previous prime is 36622009. The next prime is 36622031. The reversal of 36622021 is 12022663.

It is a happy number.

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 2528100 + 34093921 = 1590^2 + 5839^2 .

It is a cyclic number.

It is not a de Polignac number, because 36622021 - 2⁵ = 36621989 is a prime.

It is a super-3 number, since 3×36622021³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 36621983 and 36622001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36622031) 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, 300120 + ... + 300241.

It is an arithmetic number, because the mean of its divisors is an integer number (9305611).

Almost surely, 2^36622021 is an apocalyptic number.

It is an amenable number.

36622021 is a deficient number, since it is larger than the sum of its proper divisors (600423).

36622021 is an equidigital number, since it uses as much as digits as its factorization.

36622021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600422.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 36622021 is about 6051.6130907387. The cubic root of 36622021 is about 332.0836056197.

Adding to 36622021 its reverse (12022663), we get a palindrome (48644684).

The spelling of 36622021 in words is "thirty-six million, six hundred twenty-two thousand, twenty-one".