70735789 has 2 divisors, whose sum is σ = 70735790. Its totient is φ = 70735788.

The previous prime is 70735757. The next prime is 70735859. The reversal of 70735789 is 98753707.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60062500 + 10673289 = 7750^2 + 3267^2 .

It is a cyclic number.

It is not a de Polignac number, because 70735789 - 2⁵ = 70735757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70735739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35367894 + 35367895.

It is an arithmetic number, because the mean of its divisors is an integer number (35367895).

Almost surely, 2^70735789 is an apocalyptic number.

It is an amenable number.

70735789 is a deficient number, since it is larger than the sum of its proper divisors (1).

70735789 is an equidigital number, since it uses as much as digits as its factorization.

70735789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 370440, while the sum is 46.

The square root of 70735789 is about 8410.4571219405. The cubic root of 70735789 is about 413.5674981818.

The spelling of 70735789 in words is "seventy million, seven hundred thirty-five thousand, seven hundred eighty-nine".