61986707 has 2 divisors, whose sum is σ = 61986708. Its totient is φ = 61986706.

The previous prime is 61986703. The next prime is 61986751. The reversal of 61986707 is 70768916.

It is an a-pointer prime, because the next prime (61986751) can be obtained adding 61986707 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61986707 - 2² = 61986703 is a prime.

It is not a weakly prime, because it can be changed into another prime (61986703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30993353 + 30993354.

It is an arithmetic number, because the mean of its divisors is an integer number (30993354).

Almost surely, 2^61986707 is an apocalyptic number.

61986707 is a deficient number, since it is larger than the sum of its proper divisors (1).

61986707 is an equidigital number, since it uses as much as digits as its factorization.

61986707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 61986707 is about 7873.1637224181. The cubic root of 61986707 is about 395.7608727886.

The spelling of 61986707 in words is "sixty-one million, nine hundred eighty-six thousand, seven hundred seven".