61987411 has 2 divisors, whose sum is σ = 61987412. Its totient is φ = 61987410.

The previous prime is 61987397. The next prime is 61987421. The reversal of 61987411 is 11478916.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61987411 - 2⁵ = 61987379 is a prime.

It is not a weakly prime, because it can be changed into another prime (61987421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30993705 + 30993706.

It is an arithmetic number, because the mean of its divisors is an integer number (30993706).

Almost surely, 2^61987411 is an apocalyptic number.

61987411 is a deficient number, since it is larger than the sum of its proper divisors (1).

61987411 is an equidigital number, since it uses as much as digits as its factorization.

61987411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 37.

The square root of 61987411 is about 7873.2084311290. The cubic root of 61987411 is about 395.7623710378.

The spelling of 61987411 in words is "sixty-one million, nine hundred eighty-seven thousand, four hundred eleven".