7641866437 has 8 divisors (see below), whose sum is σ = 7694677760. Its totient is φ = 7589084400.

The previous prime is 7641866423. The next prime is 7641866497. The reversal of 7641866437 is 7346681467.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7641866437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7641866497) 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, 881908 + ... + 890530.

It is an arithmetic number, because the mean of its divisors is an integer number (961834720).

Almost surely, 2^7641866437 is an apocalyptic number.

It is an amenable number.

7641866437 is a deficient number, since it is larger than the sum of its proper divisors (52811323).

7641866437 is a wasteful number, since it uses less digits than its factorization.

7641866437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14643.

The product of its digits is 4064256, while the sum is 52.

The square root of 7641866437 is about 87417.7695723244. The cubic root of 7641866437 is about 1969.6987726873.

The spelling of 7641866437 in words is "seven billion, six hundred forty-one million, eight hundred sixty-six thousand, four hundred thirty-seven".