577401397 has 4 divisors (see below), whose sum is σ = 597311820. Its totient is φ = 557490976.

The previous prime is 577401367. The next prime is 577401427. The reversal of 577401397 is 793104775.

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

It is an interprime number because it is at equal distance from previous prime (577401367) and next prime (577401427).

It can be written as a sum of positive squares in 2 ways, for example, as 270240721 + 307160676 = 16439^2 + 17526^2 .

It is a cyclic number.

It is not a de Polignac number, because 577401397 - 2¹¹ = 577399349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (577401337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9955168 + ... + 9955225.

It is an arithmetic number, because the mean of its divisors is an integer number (149327955).

Almost surely, 2^577401397 is an apocalyptic number.

It is an amenable number.

577401397 is a deficient number, since it is larger than the sum of its proper divisors (19910423).

577401397 is a wasteful number, since it uses less digits than its factorization.

577401397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19910422.

The product of its (nonzero) digits is 185220, while the sum is 43.

The square root of 577401397 is about 24029.1780342150. The cubic root of 577401397 is about 832.7077566176.

The spelling of 577401397 in words is "five hundred seventy-seven million, four hundred one thousand, three hundred ninety-seven".