77672446 has 4 divisors (see below), whose sum is σ = 116508672. Its totient is φ = 38836222.

The previous prime is 77672431. The next prime is 77672489. The reversal of 77672446 is 64427677.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64427677 = 1009 ⋅63853.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19418110 + ... + 19418113.

It is an arithmetic number, because the mean of its divisors is an integer number (29127168).

Almost surely, 2^77672446 is an apocalyptic number.

77672446 is a deficient number, since it is larger than the sum of its proper divisors (38836226).

77672446 is a wasteful number, since it uses less digits than its factorization.

77672446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38836225.

The product of its digits is 395136, while the sum is 43.

The square root of 77672446 is about 8813.1972631957. The cubic root of 77672446 is about 426.6669407822. Note that the first 3 decimals are identical.

The spelling of 77672446 in words is "seventy-seven million, six hundred seventy-two thousand, four hundred forty-six".