70987123 has 2 divisors, whose sum is σ = 70987124. Its totient is φ = 70987122.

The previous prime is 70987093. The next prime is 70987129. The reversal of 70987123 is 32178907.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70987123 - 2¹³ = 70978931 is a prime.

It is not a weakly prime, because it can be changed into another prime (70987129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35493561 + 35493562.

It is an arithmetic number, because the mean of its divisors is an integer number (35493562).

Almost surely, 2^70987123 is an apocalyptic number.

70987123 is a deficient number, since it is larger than the sum of its proper divisors (1).

70987123 is an equidigital number, since it uses as much as digits as its factorization.

70987123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 70987123 is about 8425.3856291567. The cubic root of 70987123 is about 414.0567399498.

The spelling of 70987123 in words is "seventy million, nine hundred eighty-seven thousand, one hundred twenty-three".