70319761 has 4 divisors (see below), whose sum is σ = 70495524. Its totient is φ = 70144000.

The previous prime is 70319731. The next prime is 70319791. The reversal of 70319761 is 16791307.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (70319731) and next prime (70319791).

It can be written as a sum of positive squares in 2 ways, for example, as 67963536 + 2356225 = 8244^2 + 1535^2 .

It is a cyclic number.

It is not a de Polignac number, because 70319761 - 2⁵ = 70319729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70319731) 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 in 3 ways as a sum of consecutive naturals, for example, 87280 + ... + 88081.

It is an arithmetic number, because the mean of its divisors is an integer number (17623881).

Almost surely, 2^70319761 is an apocalyptic number.

It is an amenable number.

70319761 is a deficient number, since it is larger than the sum of its proper divisors (175763).

70319761 is a wasteful number, since it uses less digits than its factorization.

70319761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175762.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 70319761 is about 8385.6878668360. The cubic root of 70319761 is about 412.7551132043.

The spelling of 70319761 in words is "seventy million, three hundred nineteen thousand, seven hundred sixty-one".