70921058 has 8 divisors (see below), whose sum is σ = 114564828. Its totient is φ = 32732784.

The previous prime is 70921057. The next prime is 70921063. The reversal of 70921058 is 85012907.

It can be written as a sum of positive squares in 2 ways, for example, as 62141689 + 8779369 = 7883^2 + 2963^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70921057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1363841 + ... + 1363892.

Almost surely, 2^70921058 is an apocalyptic number.

70921058 is a deficient number, since it is larger than the sum of its proper divisors (43643770).

70921058 is a wasteful number, since it uses less digits than its factorization.

70921058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2727748.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 70921058 is about 8421.4641244857. The cubic root of 70921058 is about 413.9282511585.

The spelling of 70921058 in words is "seventy million, nine hundred twenty-one thousand, fifty-eight".