70520587 has 2 divisors, whose sum is σ = 70520588. Its totient is φ = 70520586.

The previous prime is 70520579. The next prime is 70520621. The reversal of 70520587 is 78502507.

It is an a-pointer prime, because the next prime (70520621) can be obtained adding 70520587 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70520587 - 2³ = 70520579 is a prime.

It is equal to p_4146946 and since 70520587 and 4146946 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (70520987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35260293 + 35260294.

It is an arithmetic number, because the mean of its divisors is an integer number (35260294).

Almost surely, 2^70520587 is an apocalyptic number.

70520587 is a deficient number, since it is larger than the sum of its proper divisors (1).

70520587 is an equidigital number, since it uses as much as digits as its factorization.

70520587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 70520587 is about 8397.6536603982. The cubic root of 70520587 is about 413.1476684493.

The spelling of 70520587 in words is "seventy million, five hundred twenty thousand, five hundred eighty-seven".