688677077 has 8 divisors (see below), whose sum is σ = 752732352. Its totient is φ = 624863200.

The previous prime is 688677053. The next prime is 688677079. The reversal of 688677077 is 770776886.

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 688677077 - 2¹⁶ = 688611541 is a prime.

It is a super-2 number, since 2×688677077² = 948552232770527858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688677079) 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, 54353 + ... + 65814.

It is an arithmetic number, because the mean of its divisors is an integer number (94091544).

Almost surely, 2^688677077 is an apocalyptic number.

It is an amenable number.

688677077 is a deficient number, since it is larger than the sum of its proper divisors (64055275).

688677077 is a wasteful number, since it uses less digits than its factorization.

688677077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120699.

The product of its (nonzero) digits is 5531904, while the sum is 56.

The square root of 688677077 is about 26242.6575826459. The cubic root of 688677077 is about 883.0904926224.

The spelling of 688677077 in words is "six hundred eighty-eight million, six hundred seventy-seven thousand, seventy-seven".