667772413 has 16 divisors (see below), whose sum is σ = 851913216. Its totient is φ = 508238640.

The previous prime is 667772407. The next prime is 667772447. The reversal of 667772413 is 314277766.

It is not a de Polignac number, because 667772413 - 2²¹ = 665675261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 667772413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667772213) 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, 97531 + ... + 104152.

It is an arithmetic number, because the mean of its divisors is an integer number (53244576).

Almost surely, 2^667772413 is an apocalyptic number.

It is an amenable number.

667772413 is a deficient number, since it is larger than the sum of its proper divisors (184140803).

667772413 is a wasteful number, since it uses less digits than its factorization.

667772413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201744.

The product of its digits is 296352, while the sum is 43.

The square root of 667772413 is about 25841.2927888680. The cubic root of 667772413 is about 874.0631771537.

The spelling of 667772413 in words is "six hundred sixty-seven million, seven hundred seventy-two thousand, four hundred thirteen".