427564061 has 2 divisors, whose sum is σ = 427564062. Its totient is φ = 427564060.

The previous prime is 427564057. The next prime is 427564063. The reversal of 427564061 is 160465724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 381459961 + 46104100 = 19531^2 + 6790^2 .

It is a cyclic number.

It is not a de Polignac number, because 427564061 - 2² = 427564057 is a prime.

It is a super-2 number, since 2×427564061² = 365622052517623442, which contains 22 as substring.

Together with 427564063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427564063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213782030 + 213782031.

It is an arithmetic number, because the mean of its divisors is an integer number (213782031).

Almost surely, 2^427564061 is an apocalyptic number.

It is an amenable number.

427564061 is a deficient number, since it is larger than the sum of its proper divisors (1).

427564061 is an equidigital number, since it uses as much as digits as its factorization.

427564061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 427564061 is about 20677.6222279062. The cubic root of 427564061 is about 753.3562537513.

The spelling of 427564061 in words is "four hundred twenty-seven million, five hundred sixty-four thousand, sixty-one".