49778687 has 8 divisors (see below), whose sum is σ = 58100736. Its totient is φ = 41759352.

The previous prime is 49778683. The next prime is 49778699. The reversal of 49778687 is 78687794.

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

It is a cyclic number.

It is not a de Polignac number, because 49778687 - 2² = 49778683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49778683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75323 + ... + 75980.

It is an arithmetic number, because the mean of its divisors is an integer number (7262592).

Almost surely, 2^49778687 is an apocalyptic number.

49778687 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

49778687 is a deficient number, since it is larger than the sum of its proper divisors (8322049).

49778687 is a wasteful number, since it uses less digits than its factorization.

49778687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151357.

The product of its digits is 4741632, while the sum is 56.

The square root of 49778687 is about 7055.4012642797. The cubic root of 49778687 is about 367.8587965472.

The spelling of 49778687 in words is "forty-nine million, seven hundred seventy-eight thousand, six hundred eighty-seven".