662042397 has 16 divisors (see below), whose sum is σ = 887122368. Its totient is φ = 439169280.

The previous prime is 662042383. The next prime is 662042401. The reversal of 662042397 is 793240266.

It is a de Polignac number, because none of the positive numbers 2^k-662042397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662042317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1001247 + ... + 1001907.

It is an arithmetic number, because the mean of its divisors is an integer number (55445148).

Almost surely, 2^662042397 is an apocalyptic number.

It is an amenable number.

662042397 is a deficient number, since it is larger than the sum of its proper divisors (225079971).

662042397 is a wasteful number, since it uses less digits than its factorization.

662042397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820.

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 662042397 is about 25730.1845504458. The cubic root of 662042397 is about 871.5559407010. Note that the first 3 decimals are identical.

The spelling of 662042397 in words is "six hundred sixty-two million, forty-two thousand, three hundred ninety-seven".