61421066 has 16 divisors (see below), whose sum is σ = 105688320. Its totient is φ = 26224560.

The previous prime is 61421047. The next prime is 61421089. The reversal of 61421066 is 66012416.

It is a happy number.

It is a Curzon 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, 4301 + ... + 11888.

It is an arithmetic number, because the mean of its divisors is an integer number (6605520).

Almost surely, 2^61421066 is an apocalyptic number.

61421066 is a deficient number, since it is larger than the sum of its proper divisors (44267254).

61421066 is a wasteful number, since it uses less digits than its factorization.

61421066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16469.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 61421066 is about 7837.1593067897. The cubic root of 61421066 is about 394.5533936490.

The spelling of 61421066 in words is "sixty-one million, four hundred twenty-one thousand, sixty-six".