90247668 has 24 divisors (see below), whose sum is σ = 240660672. Its totient is φ = 25785024.

The previous prime is 90247667. The next prime is 90247687. The reversal of 90247668 is 86674209.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90247667) 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, 537105 + ... + 537272.

It is an arithmetic number, because the mean of its divisors is an integer number (10027528).

Almost surely, 2^90247668 is an apocalyptic number.

It is an amenable number.

90247668 is an abundant number, since it is smaller than the sum of its proper divisors (150413004).

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

90247668 is a wasteful number, since it uses less digits than its factorization.

90247668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074391 (or 1074389 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 90247668 is about 9499.8772623650. The cubic root of 90247668 is about 448.5511724353.

The spelling of 90247668 in words is "ninety million, two hundred forty-seven thousand, six hundred sixty-eight".