61402869 has 24 divisors (see below), whose sum is σ = 99376992. Its totient is φ = 36205920.

The previous prime is 61402853. The next prime is 61402877. The reversal of 61402869 is 96820416.

It is not a de Polignac number, because 61402869 - 2⁴ = 61402853 is a prime.

It is a super-2 number, since 2×61402869² = 7540624642862322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61402669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4719 + ... + 12044.

It is an arithmetic number, because the mean of its divisors is an integer number (4140708).

Almost surely, 2^61402869 is an apocalyptic number.

It is an amenable number.

61402869 is a deficient number, since it is larger than the sum of its proper divisors (37974123).

61402869 is a wasteful number, since it uses less digits than its factorization.

61402869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16817 (or 16814 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 61402869 is about 7835.9982771820. The cubic root of 61402869 is about 394.5144254919.

It can be divided in two parts, 6140 and 2869, that added together give a palindrome (9009).

The spelling of 61402869 in words is "sixty-one million, four hundred two thousand, eight hundred sixty-nine".