77661467 has 8 divisors (see below), whose sum is σ = 84007056. Its totient is φ = 71368992.

The previous prime is 77661461. The next prime is 77661469. The reversal of 77661467 is 76416677.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77661467 - 2²⁶ = 10552603 is a prime.

It is a super-3 number, since 3×77661467³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77661461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10208 + ... + 16109.

It is an arithmetic number, because the mean of its divisors is an integer number (10500882).

Almost surely, 2^77661467 is an apocalyptic number.

77661467 is a deficient number, since it is larger than the sum of its proper divisors (6345589).

77661467 is a wasteful number, since it uses less digits than its factorization.

77661467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26557.

The product of its digits is 296352, while the sum is 44.

The square root of 77661467 is about 8812.5743684805. The cubic root of 77661467 is about 426.6468367113.

The spelling of 77661467 in words is "seventy-seven million, six hundred sixty-one thousand, four hundred sixty-seven".