70761691 has 32 divisors (see below), whose sum is σ = 95735808. Its totient is φ = 50509440.

The previous prime is 70761673. The next prime is 70761707. The reversal of 70761691 is 19616707.

It is a cyclic number.

It is not a de Polignac number, because 70761691 - 2⁷ = 70761563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70761691.

It is not an unprimeable number, because it can be changed into a prime (70761611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223065 + ... + 223381.

It is an arithmetic number, because the mean of its divisors is an integer number (2991744).

Almost surely, 2^70761691 is an apocalyptic number.

70761691 is a deficient number, since it is larger than the sum of its proper divisors (24974117).

70761691 is a wasteful number, since it uses less digits than its factorization.

70761691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 70761691 is about 8411.9968497379. The cubic root of 70761691 is about 413.6179720094.

It can be divided in two parts, 707616 and 91, that added together give a palindrome (707707).

The spelling of 70761691 in words is "seventy million, seven hundred sixty-one thousand, six hundred ninety-one".