70861801 has 2 divisors, whose sum is σ = 70861802. Its totient is φ = 70861800.

The previous prime is 70861789. The next prime is 70861859. The reversal of 70861801 is 10816807.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42250000 + 28611801 = 6500^2 + 5349^2 .

It is a cyclic number.

It is not a de Polignac number, because 70861801 - 2⁷ = 70861673 is a prime.

It is equal to p_4165726 and since 70861801 and 4165726 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (70861871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35430900 + 35430901.

It is an arithmetic number, because the mean of its divisors is an integer number (35430901).

Almost surely, 2^70861801 is an apocalyptic number.

It is an amenable number.

70861801 is a deficient number, since it is larger than the sum of its proper divisors (1).

70861801 is an equidigital number, since it uses as much as digits as its factorization.

70861801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 70861801 is about 8417.9451768231. The cubic root of 70861801 is about 413.8129352396.

The spelling of 70861801 in words is "seventy million, eight hundred sixty-one thousand, eight hundred one".