61400379 has 8 divisors (see below), whose sum is σ = 86682960. Its totient is φ = 38525696.

The previous prime is 61400359. The next prime is 61400387. The reversal of 61400379 is 97300416.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 61400379 - 2⁵ = 61400347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61400359) 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, 601914 + ... + 602015.

It is an arithmetic number, because the mean of its divisors is an integer number (10835370).

Almost surely, 2^61400379 is an apocalyptic number.

61400379 is a deficient number, since it is larger than the sum of its proper divisors (25282581).

61400379 is a wasteful number, since it uses less digits than its factorization.

61400379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203949.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 61400379 is about 7835.8393934536. The cubic root of 61400379 is about 394.5090926564.

The spelling of 61400379 in words is "sixty-one million, four hundred thousand, three hundred seventy-nine".