61390412 has 24 divisors (see below), whose sum is σ = 110462352. Its totient is φ = 29836800.

The previous prime is 61390411. The next prime is 61390421. The reversal of 61390412 is 21409316.

It is not an unprimeable number, because it can be changed into a prime (61390411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40712 + ... + 42192.

It is an arithmetic number, because the mean of its divisors is an integer number (4602598).

Almost surely, 2^61390412 is an apocalyptic number.

It is an amenable number.

61390412 is a deficient number, since it is larger than the sum of its proper divisors (49071940).

61390412 is a wasteful number, since it uses less digits than its factorization.

61390412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769 (or 1767 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 61390412 is about 7835.2033796194. The cubic root of 61390412 is about 394.4877448788.

Adding to 61390412 its reverse (21409316), we get a palindrome (82799728).

The spelling of 61390412 in words is "sixty-one million, three hundred ninety thousand, four hundred twelve".