70820747 has 2 divisors, whose sum is σ = 70820748. Its totient is φ = 70820746.

The previous prime is 70820707. The next prime is 70820791. The reversal of 70820747 is 74702807.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70820747 - 2⁶ = 70820683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70820707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35410373 + 35410374.

It is an arithmetic number, because the mean of its divisors is an integer number (35410374).

Almost surely, 2^70820747 is an apocalyptic number.

70820747 is a deficient number, since it is larger than the sum of its proper divisors (1).

70820747 is an equidigital number, since it uses as much as digits as its factorization.

70820747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 70820747 is about 8415.5063424609. The cubic root of 70820747 is about 413.7330052073.

The spelling of 70820747 in words is "seventy million, eight hundred twenty thousand, seven hundred forty-seven".