920220061 has 2 divisors, whose sum is σ = 920220062. Its totient is φ = 920220060.

The previous prime is 920220053. The next prime is 920220073. The reversal of 920220061 is 160022029.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 880605625 + 39614436 = 29675^2 + 6294^2 .

It is a cyclic number.

It is not a de Polignac number, because 920220061 - 2³ = 920220053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920220001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460110030 + 460110031.

It is an arithmetic number, because the mean of its divisors is an integer number (460110031).

Almost surely, 2^920220061 is an apocalyptic number.

It is an amenable number.

920220061 is a deficient number, since it is larger than the sum of its proper divisors (1).

920220061 is an equidigital number, since it uses as much as digits as its factorization.

920220061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 920220061 is about 30335.1291574636. The cubic root of 920220061 is about 972.6663667286. Note that the first 3 decimals are identical.

The spelling of 920220061 in words is "nine hundred twenty million, two hundred twenty thousand, sixty-one".