77651048 has 32 divisors (see below), whose sum is σ = 151630920. Its totient is φ = 37248000.

The previous prime is 77651047. The next prime is 77651069. The reversal of 77651048 is 84015677.

It can be written as a sum of positive squares in 4 ways, for example, as 29181604 + 48469444 = 5402^2 + 6962^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (77651047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18068 + ... + 21948.

Almost surely, 2^77651048 is an apocalyptic number.

It is an amenable number.

77651048 is a deficient number, since it is larger than the sum of its proper divisors (73979872).

77651048 is a wasteful number, since it uses less digits than its factorization.

77651048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989 (or 3985 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 77651048 is about 8811.9832047048. The cubic root of 77651048 is about 426.6277563258.

The spelling of 77651048 in words is "seventy-seven million, six hundred fifty-one thousand, forty-eight".