70781426 has 4 divisors (see below), whose sum is σ = 106172142. Its totient is φ = 35390712.

The previous prime is 70781383. The next prime is 70781437. The reversal of 70781426 is 62418707.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 69973225 + 808201 = 8365^2 + 899^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17695355 + ... + 17695358.

Almost surely, 2^70781426 is an apocalyptic number.

70781426 is a deficient number, since it is larger than the sum of its proper divisors (35390716).

70781426 is a wasteful number, since it uses less digits than its factorization.

70781426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35390715.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 70781426 is about 8413.1697950297. The cubic root of 70781426 is about 413.6564202707.

The spelling of 70781426 in words is "seventy million, seven hundred eighty-one thousand, four hundred twenty-six".