6990634 has 12 divisors (see below), whose sum is σ = 12198114. Its totient is φ = 2995944.

The previous prime is 6990629. The next prime is 6990667. The reversal of 6990634 is 4360996.

It can be written as a sum of positive squares in only one way, i.e., 6175225 + 815409 = 2485^2 + 903^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6990593 and 6990602.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35569 + ... + 35764.

Almost surely, 2^6990634 is an apocalyptic number.

6990634 is a deficient number, since it is larger than the sum of its proper divisors (5207480).

6990634 is a wasteful number, since it uses less digits than its factorization.

6990634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71349 (or 71342 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 6990634 is about 2643.9807109735. The cubic root of 6990634 is about 191.2077634669.

Adding to 6990634 its product of nonzero digits (34992), we get a triangular number (7025626 = T₃₇₄₈).

The spelling of 6990634 in words is "six million, nine hundred ninety thousand, six hundred thirty-four".