70423261 has 4 divisors (see below), whose sum is σ = 71149372. Its totient is φ = 69697152.

The previous prime is 70423201. The next prime is 70423271. The reversal of 70423261 is 16232407.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9114361 + 61308900 = 3019^2 + 7830^2 .

It is a cyclic number.

It is not a de Polignac number, because 70423261 - 2⁹ = 70422749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70423201) 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, 362910 + ... + 363103.

It is an arithmetic number, because the mean of its divisors is an integer number (17787343).

Almost surely, 2^70423261 is an apocalyptic number.

It is an amenable number.

70423261 is a deficient number, since it is larger than the sum of its proper divisors (726111).

70423261 is an equidigital number, since it uses as much as digits as its factorization.

70423261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726110.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 70423261 is about 8391.8568267100. The cubic root of 70423261 is about 412.9575181970.

Adding to 70423261 its reverse (16232407), we get a palindrome (86655668).

The spelling of 70423261 in words is "seventy million, four hundred twenty-three thousand, two hundred sixty-one".