70813807 has 2 divisors, whose sum is σ = 70813808. Its totient is φ = 70813806.

The previous prime is 70813781. The next prime is 70813811. The reversal of 70813807 is 70831807.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70813807 - 2¹¹ = 70811759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70813837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35406903 + 35406904.

It is an arithmetic number, because the mean of its divisors is an integer number (35406904).

Almost surely, 2^70813807 is an apocalyptic number.

70813807 is a deficient number, since it is larger than the sum of its proper divisors (1).

70813807 is an equidigital number, since it uses as much as digits as its factorization.

70813807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 70813807 is about 8415.0939982867. The cubic root of 70813807 is about 413.7194903313.

The spelling of 70813807 in words is "seventy million, eight hundred thirteen thousand, eight hundred seven".