70836749 has 2 divisors, whose sum is σ = 70836750. Its totient is φ = 70836748.

The previous prime is 70836737. The next prime is 70836793. The reversal of 70836749 is 94763807.

It is an a-pointer prime, because the next prime (70836793) can be obtained adding 70836749 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67158025 + 3678724 = 8195^2 + 1918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70836749 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70836149) 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, 35418374 + 35418375.

It is an arithmetic number, because the mean of its divisors is an integer number (35418375).

Almost surely, 2^70836749 is an apocalyptic number.

It is an amenable number.

70836749 is a deficient number, since it is larger than the sum of its proper divisors (1).

70836749 is an equidigital number, since it uses as much as digits as its factorization.

70836749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 70836749 is about 8416.4570336930. The cubic root of 70836749 is about 413.7641639532.

The spelling of 70836749 in words is "seventy million, eight hundred thirty-six thousand, seven hundred forty-nine".