70888261 has 4 divisors (see below), whose sum is σ = 70912972. Its totient is φ = 70863552.

The previous prime is 70888253. The next prime is 70888271. The reversal of 70888261 is 16288807.

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 68062500 + 2825761 = 8250^2 + 1681^2 .

It is a cyclic number.

It is not a de Polignac number, because 70888261 - 2³ = 70888253 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 (70888271) 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, 7386 + ... + 14011.

It is an arithmetic number, because the mean of its divisors is an integer number (17728243).

Almost surely, 2^70888261 is an apocalyptic number.

It is an amenable number.

70888261 is a deficient number, since it is larger than the sum of its proper divisors (24711).

70888261 is a wasteful number, since it uses less digits than its factorization.

70888261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24710.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 70888261 is about 8419.5166725888. The cubic root of 70888261 is about 413.8644351428.

The spelling of 70888261 in words is "seventy million, eight hundred eighty-eight thousand, two hundred sixty-one".