61401399 has 8 divisors (see below), whose sum is σ = 86684400. Its totient is φ = 38526336.

The previous prime is 61401397. The next prime is 61401419. The reversal of 61401399 is 99310416.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61401399 - 2¹ = 61401397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61401397) 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, 601924 + ... + 602025.

It is an arithmetic number, because the mean of its divisors is an integer number (10835550).

Almost surely, 2^61401399 is an apocalyptic number.

61401399 is a deficient number, since it is larger than the sum of its proper divisors (25283001).

61401399 is a wasteful number, since it uses less digits than its factorization.

61401399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203969.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 61401399 is about 7835.9044787440. The cubic root of 61401399 is about 394.5112772088.

The spelling of 61401399 in words is "sixty-one million, four hundred one thousand, three hundred ninety-nine".