98578977 has 32 divisors (see below), whose sum is σ = 156180480. Its totient is φ = 54120960.

The previous prime is 98578969. The next prime is 98578999. The reversal of 98578977 is 77987589.

It is not a de Polignac number, because 98578977 - 2³ = 98578969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 98578977.

It is not an unprimeable number, because it can be changed into a prime (98578927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105649 + ... + 106577.

It is an arithmetic number, because the mean of its divisors is an integer number (4880640).

Almost surely, 2^98578977 is an apocalyptic number.

It is an amenable number.

98578977 is a deficient number, since it is larger than the sum of its proper divisors (57601503).

98578977 is a wasteful number, since it uses less digits than its factorization.

98578977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133.

The product of its digits is 8890560, while the sum is 60.

The square root of 98578977 is about 9928.6946271904. The cubic root of 98578977 is about 461.9497846511.

The spelling of 98578977 in words is "ninety-eight million, five hundred seventy-eight thousand, nine hundred seventy-seven".