396737680 has 40 divisors (see below), whose sum is σ = 947352312. Its totient is φ = 154404864.

The previous prime is 396737657. The next prime is 396737683. The reversal of 396737680 is 86737693.

It can be written as a sum of positive squares in 4 ways, for example, as 120912016 + 275825664 = 10996^2 + 16608^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (396737683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64057 + ... + 69976.

Almost surely, 2^396737680 is an apocalyptic number.

It is an amenable number.

396737680 is an abundant number, since it is smaller than the sum of its proper divisors (550614632).

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

396737680 is a wasteful number, since it uses less digits than its factorization.

396737680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134083 (or 134077 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 49.

The square root of 396737680 is about 19918.2750257145. The cubic root of 396737680 is about 734.7977477351.

The spelling of 396737680 in words is "three hundred ninety-six million, seven hundred thirty-seven thousand, six hundred eighty".