61287007 has 2 divisors, whose sum is σ = 61287008. Its totient is φ = 61287006.

The previous prime is 61287001. The next prime is 61287011. The reversal of 61287007 is 70078216.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61287007 - 2⁷ = 61286879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61287007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61287001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30643503 + 30643504.

It is an arithmetic number, because the mean of its divisors is an integer number (30643504).

Almost surely, 2^61287007 is an apocalyptic number.

61287007 is a deficient number, since it is larger than the sum of its proper divisors (1).

61287007 is an equidigital number, since it uses as much as digits as its factorization.

61287007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 61287007 is about 7828.6018547375. The cubic root of 61287007 is about 394.2661308486.

The spelling of 61287007 in words is "sixty-one million, two hundred eighty-seven thousand, seven".