70772539 has 4 divisors (see below), whose sum is σ = 72418456. Its totient is φ = 69126624.

The previous prime is 70772531. The next prime is 70772563. The reversal of 70772539 is 93527707.

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 70772539 - 2³ = 70772531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70772531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822894 + ... + 822979.

It is an arithmetic number, because the mean of its divisors is an integer number (18104614).

Almost surely, 2^70772539 is an apocalyptic number.

70772539 is a deficient number, since it is larger than the sum of its proper divisors (1645917).

70772539 is a wasteful number, since it uses less digits than its factorization.

70772539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645916.

The product of its (nonzero) digits is 92610, while the sum is 40.

The square root of 70772539 is about 8412.6416184216. The cubic root of 70772539 is about 413.6391072613.

The spelling of 70772539 in words is "seventy million, seven hundred seventy-two thousand, five hundred thirty-nine".