61634959 has 2 divisors, whose sum is σ = 61634960. Its totient is φ = 61634958.

The previous prime is 61634957. The next prime is 61635011. The reversal of 61634959 is 95943616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61634959 - 2¹ = 61634957 is a prime.

Together with 61634957, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61634957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30817479 + 30817480.

It is an arithmetic number, because the mean of its divisors is an integer number (30817480).

Almost surely, 2^61634959 is an apocalyptic number.

61634959 is a deficient number, since it is larger than the sum of its proper divisors (1).

61634959 is an equidigital number, since it uses as much as digits as its factorization.

61634959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 43.

The square root of 61634959 is about 7850.7935267717. The cubic root of 61634959 is about 395.0108612086.

The spelling of 61634959 in words is "sixty-one million, six hundred thirty-four thousand, nine hundred fifty-nine".