61401065 has 16 divisors (see below), whose sum is σ = 84611520. Its totient is φ = 42304320.

The previous prime is 61401061. The next prime is 61401077. The reversal of 61401065 is 56010416.

It is not a de Polignac number, because 61401065 - 2² = 61401061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61401065.

It is not an unprimeable number, because it can be changed into a prime (61401061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28334 + ... + 30423.

It is an arithmetic number, because the mean of its divisors is an integer number (5288220).

Almost surely, 2^61401065 is an apocalyptic number.

It is an amenable number.

61401065 is a deficient number, since it is larger than the sum of its proper divisors (23210455).

61401065 is a wasteful number, since it uses less digits than its factorization.

61401065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58792.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 61401065 is about 7835.8831665614. The cubic root of 61401065 is about 394.5105618776.

The spelling of 61401065 in words is "sixty-one million, four hundred one thousand, sixty-five".