6407407156 has 6 divisors (see below), whose sum is σ = 11212962530. Its totient is φ = 3203703576.

The previous prime is 6407407129. The next prime is 6407407157. The reversal of 6407407156 is 6517047046.

It can be written as a sum of positive squares in only one way, i.e., 5835432100 + 571975056 = 76390^2 + 23916^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6407407157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800925891 + ... + 800925898.

Almost surely, 2^6407407156 is an apocalyptic number.

It is an amenable number.

6407407156 is a deficient number, since it is larger than the sum of its proper divisors (4805555374).

6407407156 is a wasteful number, since it uses less digits than its factorization.

6407407156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601851793 (or 1601851791 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 6407407156 is about 80046.2813377361. The cubic root of 6407407156 is about 1857.3515275552.

The spelling of 6407407156 in words is "six billion, four hundred seven million, four hundred seven thousand, one hundred fifty-six".