61420404 has 12 divisors (see below), whose sum is σ = 143314304. Its totient is φ = 20473464.

The previous prime is 61420379. The next prime is 61420409. The reversal of 61420404 is 40402416.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61420409) 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, 2559172 + ... + 2559195.

Almost surely, 2^61420404 is an apocalyptic number.

It is an amenable number.

61420404 is an abundant number, since it is smaller than the sum of its proper divisors (81893900).

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

61420404 is a wasteful number, since it uses less digits than its factorization.

61420404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5118374 (or 5118372 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 61420404 is about 7837.1170719851. The cubic root of 61420404 is about 394.5519761371.

The spelling of 61420404 in words is "sixty-one million, four hundred twenty thousand, four hundred four".