90678630 has 32 divisors (see below), whose sum is σ = 248719104. Its totient is φ = 20726496.

The previous prime is 90678619. The next prime is 90678641. The reversal of 90678630 is 3687609.

It is an interprime number because it is at equal distance from previous prime (90678619) and next prime (90678641).

It is a super-2 number, since 2×90678630² = 16445227877353800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215692 + ... + 216111.

It is an arithmetic number, because the mean of its divisors is an integer number (7772472).

Almost surely, 2^90678630 is an apocalyptic number.

90678630 is an abundant number, since it is smaller than the sum of its proper divisors (158040474).

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

90678630 is a wasteful number, since it uses less digits than its factorization.

90678630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431820.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 90678630 is about 9522.5327513220. The cubic root of 90678630 is about 449.2640315584.

The spelling of 90678630 in words is "ninety million, six hundred seventy-eight thousand, six hundred thirty".