654397381 has 8 divisors (see below), whose sum is σ = 714428928. Its totient is φ = 594456000.

The previous prime is 654397343. The next prime is 654397409. The reversal of 654397381 is 183793456.

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 654397381 - 2⁷ = 654397253 is a prime.

It is a super-2 number, since 2×654397381² = 856471864519318322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654392381) 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, 6885 + ... + 36826.

It is an arithmetic number, because the mean of its divisors is an integer number (89303616).

Almost surely, 2^654397381 is an apocalyptic number.

It is an amenable number.

654397381 is a deficient number, since it is larger than the sum of its proper divisors (60031547).

654397381 is a wasteful number, since it uses less digits than its factorization.

654397381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45083.

The product of its digits is 544320, while the sum is 46.

The square root of 654397381 is about 25581.1919386099. The cubic root of 654397381 is about 868.1881440890.

The spelling of 654397381 in words is "six hundred fifty-four million, three hundred ninety-seven thousand, three hundred eighty-one".