61534004 has 18 divisors (see below), whose sum is σ = 125266050. Its totient is φ = 26371632.

The previous prime is 61534003. The next prime is 61534009. The reversal of 61534004 is 40043516.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 59290000 + 2244004 = 7700^2 + 1498^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61534003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156779 + ... + 157170.

It is an arithmetic number, because the mean of its divisors is an integer number (6959225).

Almost surely, 2^61534004 is an apocalyptic number.

It is an amenable number.

61534004 is an abundant number, since it is smaller than the sum of its proper divisors (63732046).

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

61534004 is a wasteful number, since it uses less digits than its factorization.

61534004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313967 (or 313958 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 61534004 is about 7844.3612869373. The cubic root of 61534004 is about 394.7950739623.

The spelling of 61534004 in words is "sixty-one million, five hundred thirty-four thousand, four".