7666432601 has 4 divisors (see below), whose sum is σ = 7853418804. Its totient is φ = 7479446400.

The previous prime is 7666432583. The next prime is 7666432619. The reversal of 7666432601 is 1062346667.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (7666432583) and next prime (7666432619).

It can be written as a sum of positive squares in 2 ways, for example, as 2038432201 + 5628000400 = 45149^2 + 75020^2 .

It is a cyclic number.

It is not a de Polignac number, because 7666432601 - 2¹⁴ = 7666416217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 186986161 = 7666432601 / (7 + 6 + 6 + 6 + 4 + 3 + 2 + 6 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7666422601) 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, 93493040 + ... + 93493121.

It is an arithmetic number, because the mean of its divisors is an integer number (1963354701).

Almost surely, 2^7666432601 is an apocalyptic number.

It is an amenable number.

7666432601 is a deficient number, since it is larger than the sum of its proper divisors (186986203).

7666432601 is a wasteful number, since it uses less digits than its factorization.

7666432601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186986202.

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 7666432601 is about 87558.1669577430. The cubic root of 7666432601 is about 1971.8071662008.

The spelling of 7666432601 in words is "seven billion, six hundred sixty-six million, four hundred thirty-two thousand, six hundred one".