660460377 has 4 divisors (see below), whose sum is σ = 880613840. Its totient is φ = 440306916.

The previous prime is 660460369. The next prime is 660460393. The reversal of 660460377 is 773064066.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 660460377 - 2³ = 660460369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660460327) 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, 110076727 + ... + 110076732.

It is an arithmetic number, because the mean of its divisors is an integer number (220153460).

Almost surely, 2^660460377 is an apocalyptic number.

It is an amenable number.

660460377 is a deficient number, since it is larger than the sum of its proper divisors (220153463).

660460377 is a wasteful number, since it uses less digits than its factorization.

660460377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220153462.

The product of its (nonzero) digits is 127008, while the sum is 39.

The square root of 660460377 is about 25699.4236705806. The cubic root of 660460377 is about 870.8611621020.

The spelling of 660460377 in words is "six hundred sixty million, four hundred sixty thousand, three hundred seventy-seven".