246405881 has 2 divisors, whose sum is σ = 246405882. Its totient is φ = 246405880.

The previous prime is 246405869. The next prime is 246405911. The reversal of 246405881 is 188504642.

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., 224400400 + 22005481 = 14980^2 + 4691^2 .

It is a cyclic number.

It is not a de Polignac number, because 246405881 - 2¹⁴ = 246389497 is a prime.

It is a super-2 number, since 2×246405881² = 121431716382772322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (246405821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123202940 + 123202941.

It is an arithmetic number, because the mean of its divisors is an integer number (123202941).

Almost surely, 2^246405881 is an apocalyptic number.

It is an amenable number.

246405881 is a deficient number, since it is larger than the sum of its proper divisors (1).

246405881 is an equidigital number, since it uses as much as digits as its factorization.

246405881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 246405881 is about 15697.3208223569. The cubic root of 246405881 is about 626.9270705849.

The spelling of 246405881 in words is "two hundred forty-six million, four hundred five thousand, eight hundred eighty-one".