90670472878 has 8 divisors (see below), whose sum is σ = 136185375672. Its totient is φ = 45275347656.

The previous prime is 90670472861. The next prime is 90670472881. The reversal of 90670472878 is 87827407609.

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

It is a super-3 number, since 3×90670472878³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29942500 + ... + 29945527.

It is an arithmetic number, because the mean of its divisors is an integer number (17023171959).

Almost surely, 2^90670472878 is an apocalyptic number.

90670472878 is a deficient number, since it is larger than the sum of its proper divisors (45514902794).

90670472878 is a wasteful number, since it uses less digits than its factorization.

90670472878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59888786.

The product of its (nonzero) digits is 9483264, while the sum is 58.

The spelling of 90670472878 in words is "ninety billion, six hundred seventy million, four hundred seventy-two thousand, eight hundred seventy-eight".