667061265 has 16 divisors (see below), whose sum is σ = 1149398208. Its totient is φ = 328399296.

The previous prime is 667061251. The next prime is 667061273. The reversal of 667061265 is 562160766.

It is not a de Polignac number, because 667061265 - 2¹³ = 667053073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1710219 + ... + 1710608.

It is an arithmetic number, because the mean of its divisors is an integer number (71837388).

Almost surely, 2^667061265 is an apocalyptic number.

667061265 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

667061265 is a deficient number, since it is larger than the sum of its proper divisors (482336943).

667061265 is a wasteful number, since it uses less digits than its factorization.

667061265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3420848.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 667061265 is about 25827.5292081918. The cubic root of 667061265 is about 873.7527874394.

The spelling of 667061265 in words is "six hundred sixty-seven million, sixty-one thousand, two hundred sixty-five".