61402895 has 16 divisors (see below), whose sum is σ = 78236928. Its totient is φ = 46103040.

The previous prime is 61402877. The next prime is 61402897. The reversal of 61402895 is 59820416.

It is a Cunningham number, because it is equal to 7836²-1.

It is not a de Polignac number, because 61402895 - 2¹⁶ = 61337359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61402897) 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, 38402 + ... + 39968.

It is an arithmetic number, because the mean of its divisors is an integer number (4889808).

Almost surely, 2^61402895 is an apocalyptic number.

61402895 is a deficient number, since it is larger than the sum of its proper divisors (16834033).

61402895 is a wasteful number, since it uses less digits than its factorization.

61402895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 61402895 is about 7835.9999361919. Note that the first 4 decimals coincide. The cubic root of 61402895 is about 394.5144811753.

The spelling of 61402895 in words is "sixty-one million, four hundred two thousand, eight hundred ninety-five".