70487879 has 32 divisors (see below), whose sum is σ = 91660800. Its totient is φ = 52617600.

The previous prime is 70487869. The next prime is 70487881. The reversal of 70487879 is 97878407.

It is not a de Polignac number, because 70487879 - 2⁸ = 70487623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70487869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201797 + ... + 202145.

It is an arithmetic number, because the mean of its divisors is an integer number (2864400).

Almost surely, 2^70487879 is an apocalyptic number.

70487879 is a deficient number, since it is larger than the sum of its proper divisors (21172921).

70487879 is a wasteful number, since it uses less digits than its factorization.

70487879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471.

The product of its (nonzero) digits is 790272, while the sum is 50.

The square root of 70487879 is about 8395.7059858001. The cubic root of 70487879 is about 413.0837848647.

It can be divided in two parts, 704 and 87879, that multiplied together give a palindrome (61866816).

The spelling of 70487879 in words is "seventy million, four hundred eighty-seven thousand, eight hundred seventy-nine".