61246405 has 64 divisors (see below), whose sum is σ = 91238400. Its totient is φ = 38949120.

The previous prime is 61246403. The next prime is 61246411. The reversal of 61246405 is 50464216.

61246405 = 353² + 354² + ... + 610².

It is not a de Polignac number, because 61246405 - 2¹ = 61246403 is a prime.

It is a super-2 number, since 2×61246405² = 7502244250848050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61246403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1303092 + ... + 1303138.

It is an arithmetic number, because the mean of its divisors is an integer number (1425600).

Almost surely, 2^61246405 is an apocalyptic number.

It is an amenable number.

61246405 is a deficient number, since it is larger than the sum of its proper divisors (29991995).

61246405 is a wasteful number, since it uses less digits than its factorization.

61246405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 61246405 is about 7826.0082417539. The cubic root of 61246405 is about 394.1790458879.

The spelling of 61246405 in words is "sixty-one million, two hundred forty-six thousand, four hundred five".