7664765406 has 16 divisors (see below), whose sum is σ = 15361014144. Its totient is φ = 2549674584.

The previous prime is 7664765399. The next prime is 7664765411. The reversal of 7664765406 is 6045674667.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1308640 + ... + 1314483.

It is an arithmetic number, because the mean of its divisors is an integer number (960063384).

Almost surely, 2^7664765406 is an apocalyptic number.

7664765406 is an abundant number, since it is smaller than the sum of its proper divisors (7696248738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7664765406 is a wasteful number, since it uses less digits than its factorization.

7664765406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623615.

The product of its (nonzero) digits is 5080320, while the sum is 51.

The square root of 7664765406 is about 87548.6459404142. The cubic root of 7664765406 is about 1971.6642216029.

The spelling of 7664765406 in words is "seven billion, six hundred sixty-four million, seven hundred sixty-five thousand, four hundred six".