66607494 has 16 divisors (see below), whose sum is σ = 139007232. Its totient is φ = 21237128.

The previous prime is 66607487. The next prime is 66607501. The reversal of 66607494 is 49470666.

It is an interprime number because it is at equal distance from previous prime (66607487) and next prime (66607501).

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, 241194 + ... + 241469.

It is an arithmetic number, because the mean of its divisors is an integer number (8687952).

Almost surely, 2^66607494 is an apocalyptic number.

66607494 is an abundant number, since it is smaller than the sum of its proper divisors (72399738).

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

66607494 is a wasteful number, since it uses less digits than its factorization.

66607494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482691.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 66607494 is about 8161.3414338575. The cubic root of 66607494 is about 405.3601308232.

The spelling of 66607494 in words is "sixty-six million, six hundred seven thousand, four hundred ninety-four".