396720577 has 8 divisors (see below), whose sum is σ = 434329632. Its totient is φ = 359368800.

The previous prime is 396720563. The next prime is 396720607. The reversal of 396720577 is 775027693.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 396720577 - 2¹¹ = 396718529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (396720557) 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, 61083 + ... + 67264.

It is an arithmetic number, because the mean of its divisors is an integer number (54291204).

Almost surely, 2^396720577 is an apocalyptic number.

It is an amenable number.

396720577 is a deficient number, since it is larger than the sum of its proper divisors (37609055).

396720577 is a wasteful number, since it uses less digits than its factorization.

396720577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128639.

The product of its (nonzero) digits is 555660, while the sum is 46.

The square root of 396720577 is about 19917.8456917409. The cubic root of 396720577 is about 734.7871887628.

The spelling of 396720577 in words is "three hundred ninety-six million, seven hundred twenty thousand, five hundred seventy-seven".