66837954 has 32 divisors (see below), whose sum is σ = 142902144. Its totient is φ = 20789120.

The previous prime is 66837937. The next prime is 66837959. The reversal of 66837954 is 45973866.

It is a super-2 number, since 2×66837954² = 8934624189812232, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66837959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249 + ... + 11564.

It is an arithmetic number, because the mean of its divisors is an integer number (4465692).

Almost surely, 2^66837954 is an apocalyptic number.

66837954 is an abundant number, since it is smaller than the sum of its proper divisors (76064190).

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

66837954 is a wasteful number, since it uses less digits than its factorization.

66837954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11882.

The product of its digits is 1088640, while the sum is 48.

The square root of 66837954 is about 8175.4482445919. The cubic root of 66837954 is about 405.8271041025.

The spelling of 66837954 in words is "sixty-six million, eight hundred thirty-seven thousand, nine hundred fifty-four".