45688778 has 8 divisors (see below), whose sum is σ = 68596068. Its totient is φ = 22823424.

The previous prime is 45688771. The next prime is 45688789. The reversal of 45688778 is 87788654.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 43652449 + 2036329 = 6607^2 + 1427^2 .

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

It is not an unprimeable number, because it can be changed into a prime (45688771) 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, 7601 + ... + 12212.

Almost surely, 2^45688778 is an apocalyptic number.

45688778 is a deficient number, since it is larger than the sum of its proper divisors (22907290).

45688778 is a wasteful number, since it uses less digits than its factorization.

45688778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20968.

The product of its digits is 3010560, while the sum is 53.

The square root of 45688778 is about 6759.3474537118. The cubic root of 45688778 is about 357.4948974772.

The spelling of 45688778 in words is "forty-five million, six hundred eighty-eight thousand, seven hundred seventy-eight".