12958690 has 8 divisors (see below), whose sum is σ = 23325660. Its totient is φ = 5183472.

The previous prime is 12958633. The next prime is 12958691. The reversal of 12958690 is 9685921.

It can be written as a sum of positive squares in 2 ways, for example, as 11964681 + 994009 = 3459^2 + 997^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12958690² = 335855293032200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12958691) 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, 647925 + ... + 647944.

Almost surely, 2^12958690 is an apocalyptic number.

12958690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12958690 is a deficient number, since it is larger than the sum of its proper divisors (10366970).

12958690 is a wasteful number, since it uses less digits than its factorization.

12958690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295876.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 12958690 is about 3599.8180509576. The cubic root of 12958690 is about 234.8841438877.

The spelling of 12958690 in words is "twelve million, nine hundred fifty-eight thousand, six hundred ninety".