90677840 has 40 divisors (see below), whose sum is σ = 229994208. Its totient is φ = 32973440.

The previous prime is 90677837. The next prime is 90677869. The reversal of 90677840 is 4877609.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50642 + ... + 52401.

Almost surely, 2^90677840 is an apocalyptic number.

It is an amenable number.

90677840 is an abundant number, since it is smaller than the sum of its proper divisors (139316368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90677840 is a wasteful number, since it uses less digits than its factorization.

90677840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103067 (or 103061 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 90677840 is about 9522.4912706707. The cubic root of 90677840 is about 449.2627268791.

The spelling of 90677840 in words is "ninety million, six hundred seventy-seven thousand, eight hundred forty".