61423964 has 12 divisors (see below), whose sum is σ = 122847984. Its totient is φ = 26324544.

The previous prime is 61423963. The next prime is 61423969. The reversal of 61423964 is 46932416.

61423964 is an admirable number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61423963) 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, 1096829 + ... + 1096884.

It is an arithmetic number, because the mean of its divisors is an integer number (10237332).

Almost surely, 2^61423964 is an apocalyptic number.

It is an amenable number.

61423964 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61423964 is a wasteful number, since it uses less digits than its factorization.

61423964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193724 (or 2193722 counting only the distinct ones).

The product of its digits is 31104, while the sum is 35.

The square root of 61423964 is about 7837.3441930287. The cubic root of 61423964 is about 394.5595988911.

The spelling of 61423964 in words is "sixty-one million, four hundred twenty-three thousand, nine hundred sixty-four".