130623634 has 4 divisors (see below), whose sum is σ = 195935454. Its totient is φ = 65311816.

The previous prime is 130623617. The next prime is 130623659. The reversal of 130623634 is 436326031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 123143409 + 7480225 = 11097^2 + 2735^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32655907 + ... + 32655910.

Almost surely, 2^130623634 is an apocalyptic number.

130623634 is a deficient number, since it is larger than the sum of its proper divisors (65311820).

130623634 is an equidigital number, since it uses as much as digits as its factorization.

130623634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65311819.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 130623634 is about 11429.0696909241. The cubic root of 130623634 is about 507.3884621456.

Adding to 130623634 its reverse (436326031), we get a palindrome (566949665).

The spelling of 130623634 in words is "one hundred thirty million, six hundred twenty-three thousand, six hundred thirty-four".