77000646 has 8 divisors (see below), whose sum is σ = 154001304. Its totient is φ = 25666880.

The previous prime is 77000641. The next prime is 77000647. The reversal of 77000646 is 64600077.

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

77000646 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77000641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6416715 + ... + 6416726.

It is an arithmetic number, because the mean of its divisors is an integer number (19250163).

Almost surely, 2^77000646 is an apocalyptic number.

77000646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77000646 is a wasteful number, since it uses less digits than its factorization.

77000646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12833446.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 77000646 is about 8775.0011965811. The cubic root of 77000646 is about 425.4332762447.

The spelling of 77000646 in words is "seventy-seven million, six hundred forty-six", and thus it is an aban number.