70626709 has 2 divisors, whose sum is σ = 70626710. Its totient is φ = 70626708.

The previous prime is 70626679. The next prime is 70626719. The reversal of 70626709 is 90762607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68310225 + 2316484 = 8265^2 + 1522^2 .

It is a cyclic number.

It is not a de Polignac number, because 70626709 - 2¹⁷ = 70495637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70626719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35313354 + 35313355.

It is an arithmetic number, because the mean of its divisors is an integer number (35313355).

Almost surely, 2^70626709 is an apocalyptic number.

It is an amenable number.

70626709 is a deficient number, since it is larger than the sum of its proper divisors (1).

70626709 is an equidigital number, since it uses as much as digits as its factorization.

70626709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 70626709 is about 8403.9698357383. The cubic root of 70626709 is about 413.3548045703.

The spelling of 70626709 in words is "seventy million, six hundred twenty-six thousand, seven hundred nine".