70840577 has 2 divisors, whose sum is σ = 70840578. Its totient is φ = 70840576.

The previous prime is 70840543. The next prime is 70840589. The reversal of 70840577 is 77504807.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67092481 + 3748096 = 8191^2 + 1936^2 .

It is a cyclic number.

It is not a de Polignac number, because 70840577 - 2¹⁶ = 70775041 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70840577.

It is not a weakly prime, because it can be changed into another prime (70860577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35420288 + 35420289.

It is an arithmetic number, because the mean of its divisors is an integer number (35420289).

Almost surely, 2^70840577 is an apocalyptic number.

It is an amenable number.

70840577 is a deficient number, since it is larger than the sum of its proper divisors (1).

70840577 is an equidigital number, since it uses as much as digits as its factorization.

70840577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54880, while the sum is 38.

The square root of 70840577 is about 8416.6844422255. The cubic root of 70840577 is about 413.7716170559.

It can be divided in two parts, 70840 and 577, that added together give a palindrome (71417).

The spelling of 70840577 in words is "seventy million, eight hundred forty thousand, five hundred seventy-seven".