70372829 has 2 divisors, whose sum is σ = 70372830. Its totient is φ = 70372828.

The previous prime is 70372787. The next prime is 70372867. The reversal of 70372829 is 92827307.

It is an a-pointer prime, because the next prime (70372867) can be obtained adding 70372829 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67404100 + 2968729 = 8210^2 + 1723^2 .

It is an emirp because it is prime and its reverse (92827307) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70372829 is a prime.

It is a super-2 number, since 2×70372829² = 9904670122926482, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 70372792 and 70372801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70372889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35186414 + 35186415.

It is an arithmetic number, because the mean of its divisors is an integer number (35186415).

Almost surely, 2^70372829 is an apocalyptic number.

It is an amenable number.

70372829 is a deficient number, since it is larger than the sum of its proper divisors (1).

70372829 is an equidigital number, since it uses as much as digits as its factorization.

70372829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 70372829 is about 8388.8514708511. The cubic root of 70372829 is about 412.8589179776.

The spelling of 70372829 in words is "seventy million, three hundred seventy-two thousand, eight hundred twenty-nine".