77945654 has 8 divisors (see below), whose sum is σ = 116960760. Its totient is φ = 38958736.

The previous prime is 77945653. The next prime is 77945683. The reversal of 77945654 is 45654977.

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

It is a junction number, because it is equal to n+sod(n) for n = 77945599 and 77945608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77945653) 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, 2402 + ... + 12714.

It is an arithmetic number, because the mean of its divisors is an integer number (14620095).

Almost surely, 2^77945654 is an apocalyptic number.

77945654 is a deficient number, since it is larger than the sum of its proper divisors (39015106).

77945654 is a wasteful number, since it uses less digits than its factorization.

77945654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14094.

The product of its digits is 1058400, while the sum is 47.

The square root of 77945654 is about 8828.6835938321. The cubic root of 77945654 is about 427.1666135296.

The spelling of 77945654 in words is "seventy-seven million, nine hundred forty-five thousand, six hundred fifty-four".