61290587 has 2 divisors, whose sum is σ = 61290588. Its totient is φ = 61290586.

The previous prime is 61290583. The next prime is 61290617. The reversal of 61290587 is 78509216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61290587 - 2² = 61290583 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 61290587.

It is not a weakly prime, because it can be changed into another prime (61290583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30645293 + 30645294.

It is an arithmetic number, because the mean of its divisors is an integer number (30645294).

Almost surely, 2^61290587 is an apocalyptic number.

61290587 is a deficient number, since it is larger than the sum of its proper divisors (1).

61290587 is an equidigital number, since it uses as much as digits as its factorization.

61290587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 61290587 is about 7828.8305001450. The cubic root of 61290587 is about 394.2738075452.

The spelling of 61290587 in words is "sixty-one million, two hundred ninety thousand, five hundred eighty-seven".