70911245 has 4 divisors (see below), whose sum is σ = 85093500. Its totient is φ = 56728992.

The previous prime is 70911241. The next prime is 70911271. The reversal of 70911245 is 54211907.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54211907 = 3041 ⋅17827.

It can be written as a sum of positive squares in 2 ways, for example, as 24098281 + 46812964 = 4909^2 + 6842^2 .

It is a cyclic number.

It is not a de Polignac number, because 70911245 - 2² = 70911241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70911241) 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, 7091120 + ... + 7091129.

It is an arithmetic number, because the mean of its divisors is an integer number (21273375).

Almost surely, 2^70911245 is an apocalyptic number.

It is an amenable number.

70911245 is a deficient number, since it is larger than the sum of its proper divisors (14182255).

70911245 is a wasteful number, since it uses less digits than its factorization.

70911245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14182254.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 70911245 is about 8420.8814859253. The cubic root of 70911245 is about 413.9091592019.

The spelling of 70911245 in words is "seventy million, nine hundred eleven thousand, two hundred forty-five".