63907061 has 2 divisors, whose sum is σ = 63907062. Its totient is φ = 63907060.

The previous prime is 63907031. The next prime is 63907121. The reversal of 63907061 is 16070936.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63904036 + 3025 = 7994^2 + 55^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63907061 is a prime.

It is a super-2 number, since 2×63907061² = 8168224891315442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63907001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31953530 + 31953531.

It is an arithmetic number, because the mean of its divisors is an integer number (31953531).

Almost surely, 2^63907061 is an apocalyptic number.

It is an amenable number.

63907061 is a deficient number, since it is larger than the sum of its proper divisors (1).

63907061 is an equidigital number, since it uses as much as digits as its factorization.

63907061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 63907061 is about 7994.1892021643. The cubic root of 63907061 is about 399.8062832831.

Adding to 63907061 its reverse (16070936), we get a palindrome (79977997).

The spelling of 63907061 in words is "sixty-three million, nine hundred seven thousand, sixty-one".