998667037 has 16 divisors (see below), whose sum is σ = 1082227840. Its totient is φ = 918330048.

The previous prime is 998667031. The next prime is 998667049. The reversal of 998667037 is 730766899.

It is a 5-Lehmer number, since φ(998667037) divides (998667037-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 998667037 - 2³ = 998667029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998667031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340903 + ... + 343819.

It is an arithmetic number, because the mean of its divisors is an integer number (67639240).

Almost surely, 2^998667037 is an apocalyptic number.

It is an amenable number.

998667037 is a deficient number, since it is larger than the sum of its proper divisors (83560803).

998667037 is a wasteful number, since it uses less digits than its factorization.

998667037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460.

The product of its (nonzero) digits is 3429216, while the sum is 55.

The square root of 998667037 is about 31601.6935780347. The cubic root of 998667037 is about 999.5554814325. Note that the first 3 decimals are identical.

It can be divided in two parts, 99 and 8667037, that added together give a square (8667136 = 2944²).

The spelling of 998667037 in words is "nine hundred ninety-eight million, six hundred sixty-seven thousand, thirty-seven".