70715261 has 4 divisors (see below), whose sum is σ = 70856352. Its totient is φ = 70574172.

The previous prime is 70715233. The next prime is 70715269. The reversal of 70715261 is 16251707.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70715261 - 2¹⁴ = 70698877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70715269) 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, 69791 + ... + 70796.

It is an arithmetic number, because the mean of its divisors is an integer number (17714088).

Almost surely, 2^70715261 is an apocalyptic number.

It is an amenable number.

70715261 is a deficient number, since it is larger than the sum of its proper divisors (141091).

70715261 is a wasteful number, since it uses less digits than its factorization.

70715261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141090.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 70715261 is about 8409.2366478771. The cubic root of 70715261 is about 413.5274876246.

Adding to 70715261 its reverse (16251707), we get a palindrome (86966968).

The spelling of 70715261 in words is "seventy million, seven hundred fifteen thousand, two hundred sixty-one".