1220370587 has 2 divisors, whose sum is σ = 1220370588. Its totient is φ = 1220370586.

The previous prime is 1220370563. The next prime is 1220370611. The reversal of 1220370587 is 7850730221.

It is a balanced prime because it is at equal distance from previous prime (1220370563) and next prime (1220370611).

It is a cyclic number.

It is not a de Polignac number, because 1220370587 - 2⁶ = 1220370523 is a prime.

It is a super-2 number, since 2×1220370587² = 2978608739229449138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1220070587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610185293 + 610185294.

It is an arithmetic number, because the mean of its divisors is an integer number (610185294).

Almost surely, 2^1220370587 is an apocalyptic number.

1220370587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220370587 is an equidigital number, since it uses as much as digits as its factorization.

1220370587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 1220370587 is about 34933.8029278234. The cubic root of 1220370587 is about 1068.6379113345.

The spelling of 1220370587 in words is "one billion, two hundred twenty million, three hundred seventy thousand, five hundred eighty-seven".