70261138 has 4 divisors (see below), whose sum is σ = 105391710. Its totient is φ = 35130568.

The previous prime is 70261133. The next prime is 70261151. The reversal of 70261138 is 83116207.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83116207 = 2063 ⋅40289.

It can be written as a sum of positive squares in only one way, i.e., 60793209 + 9467929 = 7797^2 + 3077^2 .

It is not an unprimeable number, because it can be changed into a prime (70261133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17565283 + ... + 17565286.

Almost surely, 2^70261138 is an apocalyptic number.

70261138 is a deficient number, since it is larger than the sum of its proper divisors (35130572).

70261138 is a wasteful number, since it uses less digits than its factorization.

70261138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35130571.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 70261138 is about 8382.1917181606. The cubic root of 70261138 is about 412.6403817272.

The spelling of 70261138 in words is "seventy million, two hundred sixty-one thousand, one hundred thirty-eight".