76897769 has 16 divisors (see below), whose sum is σ = 87494400. Its totient is φ = 66998016.

The previous prime is 76897747. The next prime is 76897789. The reversal of 76897769 is 96779867.

It is a cyclic number.

It is not a de Polignac number, because 76897769 - 2¹² = 76893673 is a prime.

It is a super-2 number, since 2×76897769² = 11826533754354722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76897739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106592 + ... + 107310.

It is an arithmetic number, because the mean of its divisors is an integer number (5468400).

Almost surely, 2^76897769 is an apocalyptic number.

It is an amenable number.

76897769 is a deficient number, since it is larger than the sum of its proper divisors (10596631).

76897769 is a wasteful number, since it uses less digits than its factorization.

76897769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184.

The product of its digits is 8001504, while the sum is 59.

The square root of 76897769 is about 8769.1373007839. The cubic root of 76897769 is about 425.2437245645.

The spelling of 76897769 in words is "seventy-six million, eight hundred ninety-seven thousand, seven hundred sixty-nine".