70734649 has 2 divisors, whose sum is σ = 70734650. Its totient is φ = 70734648.

The previous prime is 70734641. The next prime is 70734659. The reversal of 70734649 is 94643707.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60217600 + 10517049 = 7760^2 + 3243^2 .

It is an emirp because it is prime and its reverse (94643707) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70734649 - 2³ = 70734641 is a prime.

It is not a weakly prime, because it can be changed into another prime (70734641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35367324 + 35367325.

It is an arithmetic number, because the mean of its divisors is an integer number (35367325).

Almost surely, 2^70734649 is an apocalyptic number.

It is an amenable number.

70734649 is a deficient number, since it is larger than the sum of its proper divisors (1).

70734649 is an equidigital number, since it uses as much as digits as its factorization.

70734649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 70734649 is about 8410.3893488946. The cubic root of 70734649 is about 413.5652764423.

The spelling of 70734649 in words is "seventy million, seven hundred thirty-four thousand, six hundred forty-nine".