61163387 has 2 divisors, whose sum is σ = 61163388. Its totient is φ = 61163386.

The previous prime is 61163383. The next prime is 61163393. The reversal of 61163387 is 78336116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61163387 - 2² = 61163383 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61163383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30581693 + 30581694.

It is an arithmetic number, because the mean of its divisors is an integer number (30581694).

Almost surely, 2^61163387 is an apocalyptic number.

61163387 is a deficient number, since it is larger than the sum of its proper divisors (1).

61163387 is an equidigital number, since it uses as much as digits as its factorization.

61163387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 61163387 is about 7820.7024620554. The cubic root of 61163387 is about 394.0008653472. Note that the first 3 decimals are identical.

The spelling of 61163387 in words is "sixty-one million, one hundred sixty-three thousand, three hundred eighty-seven".