6990151 has 16 divisors (see below), whose sum is σ = 8306496. Its totient is φ = 5757696.

The previous prime is 6990107. The next prime is 6990161. The reversal of 6990151 is 1510996.

It is not a de Polignac number, because 6990151 - 2¹³ = 6981959 is a prime.

It is a super-2 number, since 2×6990151² = 97724422005602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6990161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35385 + ... + 35581.

It is an arithmetic number, because the mean of its divisors is an integer number (519156).

Almost surely, 2^6990151 is an apocalyptic number.

6990151 is a deficient number, since it is larger than the sum of its proper divisors (1316345).

6990151 is a wasteful number, since it uses less digits than its factorization.

6990151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 6990151 is about 2643.8893698489. The cubic root of 6990151 is about 191.2033596948.

The spelling of 6990151 in words is "six million, nine hundred ninety thousand, one hundred fifty-one".