70871265 has 12 divisors (see below), whose sum is σ = 122843604. Its totient is φ = 37797984.

The previous prime is 70871261. The next prime is 70871287. The reversal of 70871265 is 56217807.

It can be written as a sum of positive squares in 2 ways, for example, as 54420129 + 16451136 = 7377^2 + 4056^2 .

It is not a de Polignac number, because 70871265 - 2² = 70871261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70871261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 787414 + ... + 787503.

It is an arithmetic number, because the mean of its divisors is an integer number (10236967).

Almost surely, 2^70871265 is an apocalyptic number.

It is an amenable number.

70871265 is a deficient number, since it is larger than the sum of its proper divisors (51972339).

70871265 is a wasteful number, since it uses less digits than its factorization.

70871265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574928 (or 1574925 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 70871265 is about 8418.5072904880. The cubic root of 70871265 is about 413.8313567832.

The spelling of 70871265 in words is "seventy million, eight hundred seventy-one thousand, two hundred sixty-five".