77607669 has 16 divisors (see below), whose sum is σ = 111898368. Its totient is φ = 47657472.

The previous prime is 77607667. The next prime is 77607671. The reversal of 77607669 is 96670677.

It is an interprime number because it is at equal distance from previous prime (77607667) and next prime (77607671).

It is not a de Polignac number, because 77607669 - 2¹ = 77607667 is a prime.

It is a super-2 number, since 2×77607669² = 12045900575227122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77607661) 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, 13792 + ... + 18585.

It is an arithmetic number, because the mean of its divisors is an integer number (6993648).

Almost surely, 2^77607669 is an apocalyptic number.

It is an amenable number.

77607669 is a deficient number, since it is larger than the sum of its proper divisors (34290699).

77607669 is a wasteful number, since it uses less digits than its factorization.

77607669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32444.

The product of its (nonzero) digits is 666792, while the sum is 48.

The square root of 77607669 is about 8809.5214966535. The cubic root of 77607669 is about 426.5482977171.

The spelling of 77607669 in words is "seventy-seven million, six hundred seven thousand, six hundred sixty-nine".