90787623 has 8 divisors (see below), whose sum is σ = 124955136. Its totient is φ = 58572600.

The previous prime is 90787621. The next prime is 90787657. The reversal of 90787623 is 32678709.

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

It is not a de Polignac number, because 90787623 - 2¹ = 90787621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90787621) 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, 488013 + ... + 488198.

It is an arithmetic number, because the mean of its divisors is an integer number (15619392).

Almost surely, 2^90787623 is an apocalyptic number.

90787623 is a gapful number since it is divisible by the number (93) formed by its first and last digit.

90787623 is a deficient number, since it is larger than the sum of its proper divisors (34167513).

90787623 is a wasteful number, since it uses less digits than its factorization.

90787623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976245.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 90787623 is about 9528.2539323845. The cubic root of 90787623 is about 449.4439601292.

The spelling of 90787623 in words is "ninety million, seven hundred eighty-seven thousand, six hundred twenty-three".