70700779 has 4 divisors (see below), whose sum is σ = 71349520. Its totient is φ = 70052040.

The previous prime is 70700743. The next prime is 70700783. The reversal of 70700779 is 97700707.

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

It is a cyclic number.

It is not a de Polignac number, because 70700779 - 2¹¹ = 70698731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70700789) 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, 324207 + ... + 324424.

It is an arithmetic number, because the mean of its divisors is an integer number (17837380).

Almost surely, 2^70700779 is an apocalyptic number.

70700779 is a deficient number, since it is larger than the sum of its proper divisors (648741).

70700779 is a wasteful number, since it uses less digits than its factorization.

70700779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648740.

The product of its (nonzero) digits is 21609, while the sum is 37.

The square root of 70700779 is about 8408.3755268185. The cubic root of 70700779 is about 413.4992565004.

The spelling of 70700779 in words is "seventy million, seven hundred thousand, seven hundred seventy-nine".