1240677647 has 8 divisors (see below), whose sum is σ = 1355473872. Its totient is φ = 1126216000.

The previous prime is 1240677611. The next prime is 1240677677. The reversal of 1240677647 is 7467760421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1240677647 - 2¹⁰ = 1240676623 is a prime.

It is a super-3 number, since 3×1240677647³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240677598 and 1240677607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240677677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75854 + ... + 90747.

It is an arithmetic number, because the mean of its divisors is an integer number (169434234).

Almost surely, 2^1240677647 is an apocalyptic number.

1240677647 is a deficient number, since it is larger than the sum of its proper divisors (114796225).

1240677647 is a wasteful number, since it uses less digits than its factorization.

1240677647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167289.

The product of its (nonzero) digits is 395136, while the sum is 44.

The square root of 1240677647 is about 35223.2543499319. The cubic root of 1240677647 is about 1074.5327399983.

The spelling of 1240677647 in words is "one billion, two hundred forty million, six hundred seventy-seven thousand, six hundred forty-seven".