361061681 has 4 divisors (see below), whose sum is σ = 372708864. Its totient is φ = 349414500.

The previous prime is 361061671. The next prime is 361061683. The reversal of 361061681 is 186160163.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361061681 is a prime.

It is a super-2 number, since 2×361061681² = 260731074973091522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361061683) 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, 5823545 + ... + 5823606.

It is an arithmetic number, because the mean of its divisors is an integer number (93177216).

Almost surely, 2^361061681 is an apocalyptic number.

361061681 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

361061681 is a deficient number, since it is larger than the sum of its proper divisors (11647183).

361061681 is a wasteful number, since it uses less digits than its factorization.

361061681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11647182.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 361061681 is about 19001.6231148815. The cubic root of 361061681 is about 712.0772868014.

The spelling of 361061681 in words is "three hundred sixty-one million, sixty-one thousand, six hundred eighty-one".