672118749 has 32 divisors (see below), whose sum is σ = 1109808000. Its totient is φ = 399520512.

The previous prime is 672118729. The next prime is 672118751. The reversal of 672118749 is 947811276.

It is a happy number.

It is not a de Polignac number, because 672118749 - 2¹¹ = 672116701 is a prime.

It is a super-2 number, since 2×672118749² = 903487225514650002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672118709) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29814 + ... + 47255.

It is an arithmetic number, because the mean of its divisors is an integer number (34681500).

Almost surely, 2^672118749 is an apocalyptic number.

It is an amenable number.

672118749 is a deficient number, since it is larger than the sum of its proper divisors (437689251).

672118749 is a wasteful number, since it uses less digits than its factorization.

672118749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77114 (or 77108 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 672118749 is about 25925.2531135185. The cubic root of 672118749 is about 875.9554185419.

The spelling of 672118749 in words is "six hundred seventy-two million, one hundred eighteen thousand, seven hundred forty-nine".