672148386 has 216 divisors, whose sum is σ = 1916057052. Its totient is φ = 168739200.

The previous prime is 672148357. The next prime is 672148429. The reversal of 672148386 is 683841276.

It can be written as a sum of positive squares in 2 ways, for example, as 519156225 + 152992161 = 22785^2 + 12369^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 11018796 + ... + 11018856.

Almost surely, 2^672148386 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672148386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (958028526).

672148386 is an abundant number, since it is smaller than the sum of its proper divisors (1243908666).

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

672148386 is a wasteful number, since it uses less digits than its factorization.

672148386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 117 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 672148386 is about 25925.8246927653. The cubic root of 672148386 is about 875.9682934042.

The spelling of 672148386 in words is "six hundred seventy-two million, one hundred forty-eight thousand, three hundred eighty-six".