61394004 has 144 divisors (see below), whose sum is σ = 193925760. Its totient is φ = 16450560.

The previous prime is 61393993. The next prime is 61394017. The reversal of 61394004 is 40049316.

61394004 is a `hidden beast` number, since 613 + 9 + 40 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 218344 + ... + 218624.

Almost surely, 2^61394004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61394004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96962880).

61394004 is an abundant number, since it is smaller than the sum of its proper divisors (132531756).

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

61394004 is a wasteful number, since it uses less digits than its factorization.

61394004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 61394004 is about 7835.4325981403. The cubic root of 61394004 is about 394.4954386554.

The spelling of 61394004 in words is "sixty-one million, three hundred ninety-four thousand, four".