89742637 has 4 divisors (see below), whose sum is σ = 89763840. Its totient is φ = 89721436.

The previous prime is 89742607. The next prime is 89742659. The reversal of 89742637 is 73624798.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89742637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89742607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1837 + ... + 13522.

It is an arithmetic number, because the mean of its divisors is an integer number (22440960).

Almost surely, 2^89742637 is an apocalyptic number.

It is an amenable number.

89742637 is a deficient number, since it is larger than the sum of its proper divisors (21203).

89742637 is a wasteful number, since it uses less digits than its factorization.

89742637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21202.

The product of its digits is 508032, while the sum is 46.

The square root of 89742637 is about 9473.2590485007. The cubic root of 89742637 is about 447.7129009941.

It can be divided in two parts, 8974 and 2637, that added together give a palindrome (11611).

The spelling of 89742637 in words is "eighty-nine million, seven hundred forty-two thousand, six hundred thirty-seven".