70920755 has 4 divisors (see below), whose sum is σ = 85104912. Its totient is φ = 56736600.

The previous prime is 70920743. The next prime is 70920763. The reversal of 70920755 is 55702907.

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

It is not a de Polignac number, because 70920755 - 2¹⁰ = 70919731 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7092071 + ... + 7092080.

It is an arithmetic number, because the mean of its divisors is an integer number (21276228).

Almost surely, 2^70920755 is an apocalyptic number.

70920755 is a deficient number, since it is larger than the sum of its proper divisors (14184157).

70920755 is a wasteful number, since it uses less digits than its factorization.

70920755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14184156.

The product of its (nonzero) digits is 22050, while the sum is 35.

The square root of 70920755 is about 8421.4461347206. The cubic root of 70920755 is about 413.9276616747.

The spelling of 70920755 in words is "seventy million, nine hundred twenty thousand, seven hundred fifty-five".