1684406072 has 16 divisors (see below), whose sum is σ = 3267167400. Its totient is φ = 813161440.

The previous prime is 1684406051. The next prime is 1684406077. The reversal of 1684406072 is 2706044861.

It is a super-3 number, since 3×1684406072³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1684406077) 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, 3629954 + ... + 3630417.

Almost surely, 2^1684406072 is an apocalyptic number.

It is an amenable number.

1684406072 is a deficient number, since it is larger than the sum of its proper divisors (1582761328).

1684406072 is a wasteful number, since it uses less digits than its factorization.

1684406072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7260406 (or 7260402 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 1684406072 is about 41041.5164437183. The cubic root of 1684406072 is about 1189.8227431764.

The spelling of 1684406072 in words is "one billion, six hundred eighty-four million, four hundred six thousand, seventy-two".