87770000678 has 16 divisors (see below), whose sum is σ = 137391400800. Its totient is φ = 41973207936.

The previous prime is 87770000671. The next prime is 87770000753. The reversal of 87770000678 is 87600007778.

It is a super-2 number, since 2×87770000678² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87770000671) 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, 475076 + ... + 633432.

It is an arithmetic number, because the mean of its divisors is an integer number (8586962550).

Almost surely, 2^87770000678 is an apocalyptic number.

87770000678 is a deficient number, since it is larger than the sum of its proper divisors (49621400122).

87770000678 is a wasteful number, since it uses less digits than its factorization.

87770000678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170431.

The product of its (nonzero) digits is 921984, while the sum is 50.

The spelling of 87770000678 in words is "eighty-seven billion, seven hundred seventy million, six hundred seventy-eight", and thus it is an aban number.